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Operation, and MaintenanceManual Reset Relief Valve Titan Class RX 36000 -02 & -03 M-36000 Address: NOV Valve Group 9700 West Gulf Bank Houston TX 77040 Phone #: 281 272 7700 Installation and Operation Manual Reset Relief Valve -- RX 36000-02 & -03 Foreword… This manual is published as a guide for the normal operation of your NATIONAL OILWELL VARCO equipment. Because of many factors which contribute to the function or malfunction of this machinery, and not having complete knowledge of each factor or combination of factors, we cannot detail all facets of this subject. We must therefore confine the scope of this presentation and when situations encountered are not fully encompassed by complete, understandable instructions, these situations must be referred to the manufacturer. The dimension and tolerances specified in this publication are those desirable for the most efficient operations of the equipment. When components become worn or when new parts are introduced into a worn unit, it may not be possible or economically feasible to reestablish such strict alignment and correct all dimensional deviations. Improvements in design, engineering, materials, production methods, etc., may necessitate changes in these products and result in inconsistencies between the content of this publication and the physical equipment. We reserve the right to make these changes without incurring any liability or obligation beyond that which is stipulated in the purchase contract. The pictures, photographs, charts, diagrams, drawings, verbal contents and specifications are not to be construed as giving rise to any warranty on the part of NATIONAL OILWELL VARCO. NATIONAL OILWELL VARCO makes no warranty either expressed or implied beyond that which is stipulated in the purchase contract. ! CAUTION ! CAUTION ! CAUTION ! EXERCISE SAFETY IN ALL PERFORMANCES: DO NOT IGNORE ANY WARNINGS, USE ONLY APPROVED METHODS, MATERIALS AND TOOLS. DO NOT PERMIT ANY FUNCTION OF QUESTIONABLE SAFETY; ACCIDENTS ARE CAUSED BY UNSAFE ACTS AND UNSAFE CONDITIONS. SAFETY IS YOUR BUSINESS AND YOU ARE INVOLVED. ! WARNING ! WARNING ! WARNING ! BEFORE PERFORMING ANY SERVICE FUNCTION, BE CERTAIN THAT THE UNIT IS SEPARATED FROM ITS POWER SOURCE OR THAT THE POWER SOURCE IS LOCKED-OUT TO PREVENT ANY FORM OF ENERGY FROM ENTERING THE EQUIPMENT. THIS WOULD INCLUDE ELECTRICAL OR MECHANICAL ENERGY INTO OR FROM THE PRIME MOVER(S), PNEUMATIC ENERGY FROM THE COMPRESSOR/AIR SYSTEM, ETC. ! WARNING ! WARNING ! WARNING ! FAILURE TO OBSERVE THE WARNINGS AND NOTES OF CAUTION IN THIS PUBLICATION CAN RESULT IN PROPERTY DAMAGE, SERIOUS BODILY INJURY, OR DEATH. ! WARNING ! WARNING ! WARNING ! DO NOT PROCEED WITH INSTALLATION UNTIL THE INSTALLER HAS READ THE MANUAL IN ITS ENTIRETY. © Copyright 2007 National Oilwell Varco, all rights reserved. 1 MANUAL: M-36000 www.nov.com Intended audience Conventions Notes. photocopying. used in connection with this sale are for the sole purpose of identifying the Equipment and are not to be construed as an express warranty that the Equipment will conform to such description. Any description of Equipment. installation. Installation and Operation Manual Reset Relief Valve -. and Purchaser has given written notice of such defect within thirty days from the discovery thereof. Information in this manual is subject to change without notice. NOV may require the return. Warranty National Oilwell Varco (NOV) warrants that. whether oral. implied or statutory. This is a sole and exclusive warranty. recording or otherwise. and warnings 1-1 Notes 1-1 Cautions 1-1 Warnings 1-1 Illustrations 1-1 Safety requirements Personnel training 1-2 Recommended tools 1-2 Genera system safety practices 1-3 Replacing components 1-3 Maintenance 1-3 Proper use of equipment 1-3 Intended audience This manual is intended for use by field engineering. models. brand. the Equipment shall be free of defects in materials and workmanship under normal use and service. will be to proceed under this warranty. refund an equitable portion of the purchase price. by shipping a similar part FOB shipping point or. at its option. at its option.RX 36000-02 & -03 Publication date: September 26. if any. will not be held liable for errors in this material. express. to a designated location. Any field advisory or installation support is advisory only. including negligence. or for consequences arising from misuse of this material. Purchaser's sole and exclusive remedy. specifications. or similar material. All liability of NOV shall terminate one year from the date of delivery of the Equipment. transportation prepaid to establish Purchaser's claim. including electronic. written. The foregoing warranties are in lieu of all other warranties. Conventions 2 MANUAL: M-36000 www. This warranty applies only to equipment manufactured by NOV. Every effort has been made to ensure the accuracy of the information contained herein. Implied warranties or merchantability and fitness for a particular purpose will not apply. No allowance will be made for repairs undertaken without NOV’s written consent or approval. bulletins. National Oilwell Varco company (NOV). for a period of one year from the date of delivery equipment of manufacture. or trade names used in this publication are the trademarks or registered trademarks of their respective owners. 2007 All other product. NOV will repair or replace the part. No part of this publication may be reproduced or copied in any form. of the defective part.nov.com . and any samples. This publication is the property of. If a defect in the Equipment appears within one year from the date of shipment. mechanical. and contains information proprietary to National Oilwell Varco. whether based upon warranty. NOV's warranty obligations and purchaser's remedies there under are solely and exclusively as stated herein. operation and repair personnel. All rights reserved. without the prior written permission of National Oilwell Varco. contract or tort. drawings. Warranties on equipment manufactured by others. are assigned to Purchaser by NOV (without recourse) at time of delivery. and provided the Equipment is used and maintained in accordance with instructions supplied. or by any means. cautions. All personnel performing installation. Warnings The warning symbol indicates a definite risk of equipment damage or danger to personnel. tool operation. A caution symbol may also indicate a condition that voids your equipment warranty. The presence of a NOV Valve representative at the site does not relieve the owner/ operator of responsibility to follow published installation. operation.RX 36000-02 & -03 Notes. and to advise you to take specific action to protect personnel from potential injury or lethal conditions.com . General system safety practices Avoid performing maintenance or repairs while the equipment is in operation. and maintenance. use only these tools. cautions. and maintenance instructions. Recommended tools Service operations may require the use of tools designed specifically for the purpose described. significant property loss or significant equipment damage. and warnings appear throughout this manual to provide you with additional information. Illustrations Figures provide a graphical representation of equipment components or screen snapshots for use in identifying parts or establishing nomenclature. and may or may not be drawn to scale. Please pay close attention to these advisories. see the technical drawings included with your National Oilwell Varco documentation. Safety requirements Safety requirements Personnel training NOV equipment is installed and operated in a controlled drilling rig environment involving hazardous operations and situations. Notes The note symbol indicates that additional information is provided about the current topic. For more specific component information pertinent to your rig configuration. Proper service and repair is important for safe and reliable operation. 3 MANUAL: M-36000 www. assembly/disassembly or repair. Operation and service procedures provided by NOV manuals are the recommended methods of performing those operations. cautions.nov. Replacing components Verify that all components are tagged and labeled during disassembly and reassembly of equipment. Wear proper protective equipment during equipment installation. and warnings Notes. operation. Failure to observe and follow proper procedures is likely to result in serious or fatal injury to personnel. When stated. maintenance. should be trained on shop safety. Local codes may apply. repair or maintenance procedures on the equipment. operation. Contact the NOV Valve training department for more information about equipment operation and maintenance training. Please consult them prior to performing any operation. Follow instructions explicitly and take extreme care. For more specific component information pertinent to your rig configuration. Cautions The caution symbol indicates potential risk of damage to equipment or injury to personnel. They may also inform you of actions necessary to prevent equipment damage or conditions that may void your warranty. Figures provide a graphical representation of equipment components or screen snapshots for use in identifying parts or establishing nomenclature. and may or may not be drawn to scale. see the technical drawings included with your National Oilwell Varco documentation.Installation and Operation Manual Reset Relief Valve -. or those in the vicinity of the equipment. The entire valve can be replaced with all adjacent piping in place. Various dash numbers may be added to indicate the type 4 MANUAL: M-36000 www. There is no load bearing threaded connections exposed to the flow media (such as line pipe threads). The butt weld (3-1/2” schedule XXH) flanges or 3”-1502 unions provide excellent connection integrity.nov. The “open” or “set” position of the valve piston is indicated by the position of the “release button”.715. The valve may be manually discharged at any time. The relieving pressure set point may be altered easily by turning a single adjusting nut. Patent 5. The release shaft retainer has been redesigned for greater safety.861. When the button is away from the side of the bonnet. When the force exerted by the process stream (i. Proper use of equipment NOV equipment is designed for specific functions and applications. The valve is easily reset by operating a single lever. Maintenance Equipment must be maintained on a regular and routine basis. by striking the “release button” provided on the valve. the old style “RX” valve. Failure to do so could result in equipment damage or personal injury. The valve’s internal linkage is fully enclosed and protected from debris and corrosion.RX 36000-02 & -03 Replace failed or damaged components with NOV genuine certified parts. The 6-bolt inlet and discharge flanges allow for easy access to the body and internal parts. This valve actually utilizes a balance beam whereby the piston force acts on a short moment arm while the spring force acts on a longer moment arm. the valve "trips" open (the piston moves to its fully open position) and allows process fluid to exit the valve and pass through a discharge line to a mud tank or pit. the valve is “open”. the Titan RX valve incorporates a pressure balance chamber which hydraulically cushions the opening movement of the piston by throttling fluid from the balance chamber to the discharge side of the valve through specially sized piston ports. but most valves of this type incorporate one or more helical compression springs which are used to maintain constant force acting on the backside of a piston. adjustment may be made while pressure is in the valve however. which will in turn protect the liners and other internal components of a typical mud pump. The NOV Titan Class "RX" Valve utilizes the 36000 series part number. no replacement shear pins are required and little. Introduction Features 2-1 Introduction Features Like its predecessor. the accuracy of the valve is maintained over numerous valve “trips”.com . the valve is “set”. regardless of line pressure.e. The NOV Reset Relief Valve is designed to keep pressure from exceeding a preset valve. When the button is adjacent to the side of the bonnet.S. A pressure relief valve is a self operating valve that is installed in a process system to protect against over pressurization of the system. Installation and Operation Manual Reset Relief Valve -. and should be used only for its intended purpose. down time is encountered in resetting the valve. Once properly calibrated. is limited to increasing the setting only. if any. ! CAUTION ! CAUTION ! CAUTION ! DO NOT RELIEVE PRESSURE USING THE ADJUSTING NUT The accuracy of the relief valve is not affected by continuous pressure surges or vibration. The valve is 100% adjustable to provide any relief pressure setting within the particular pressure range of the valve. See the Maintenance and Repair chapter of this manual for maintenance recommendations. There are a wide variety of valve designs. causing the valve to be normally closed. fluid pressure) against the piston is greater than the constant force exerted by the spring. U. Note Sufficient size piping and schedule are required for operating conditions including containing working pressure. installation may begin. Assemblies including component parts with butt weld ends requiring welding must follow the same procedures described above. The dimensions of the “window” required for valve installation are shown in the assembly drawing.D. including manuals and CDs.nov. The discharge line should slope gradually downwards from the valve outlet to the mud pit or holding tank. Please refer to the bill of material and drawing sections to determine the complete valve assembly number. The Titan “RX” Reset Relief Valve may be installed in any position but it is generally easier to operate and maintain with the bonnet in a vertical position together with a horizontal discharge line.D.D.300 I. It is recommended that the pipe I.300 I. REPLACE ALL WORN OR DAMAGED UNION COMPONENTS WITH ORIGINAL NOV PARTS. It is recommended that the pipe I. the integrity of all welding. Material certificates for these components are available and (for the butt weld components) include heat treating times and temperatures which may be used to write a proper weld procedure for valve installation (WPS or PQR). handling cyclic nature of the pump pressures.) for the upstream and downstream piping. Also. welded. Once it is confirmed the order has been received complete in undamaged condition. check the bill of lading for any separately shipped items. and staying within the erosional velocity limits of the pipe for the expected discharge fluid volumes of drilling mud and the related fluid velocity within the pipe. ! WARNING ! WARNING ! WARNING ! NEVER ATTEMPT TO MAKE UP OR BRAKE OUT UNION CONNECTIONS WITH ANY INTERNAL PRESSURE IN THE VALVE. A 3 degree minimum downward slope must be maintained on piping. Figure 3-1 exhibits the correct setup of the upstream and downstream piping. Figure 3-1 exhibits the correct setup of the upstream and downstream piping. ! WARNING ! WARNING ! WARNING ! 5 MANUAL: M-36000 www. A claim for damage or loss should be reported immediately to the carrier and to the Valve Division. be no smaller than that of a 3” Schedule XXH pipe (2.1 specifications PRIOR to bolting the valve in place for operation or (B) adapter flanges which go from a 6-bolt pattern (to match the body) to 3”-1502 male and female union connections.RX 36000-02 & -03 of piping adapters supplied with the valve or any other auxiliary items. which may be required for the installation of this valve.) for the upstream and downstream piping. be no smaller than that of a 3” Schedule XXH pipe (2. and stress relieved in accordance with ASME Section IX and/or ASME B31. This insures any fluid remaining in the line will self-drain. inspect the goods as received from the shipping company. Due to the service encountered and pressure rating of this equipment.D. A 3 degree minimum downward slope must be maintained on piping. The valve is outfitted with (A) a pair of 6-bolt butt weld flanges (one on the inlet and one on the outlet) that have to be fitted.com . Inspection Installation 3-1 Storage Recommended procedure for extended storage 3-4 Inspection Installation Prior to setting up and operating a new Reset Relief Valve. should be volumetrically inspected 100% using appropriate X-ray procedures. tacked.Installation and Operation Manual Reset Relief Valve -. The dimensions of the “window” required for valve installation are shown in the assembly drawing. nov. ! WARNING ! WARNING ! WARNING ! AVOID MOUTING THE VALVE ON A TALL RISER UNLESS THE RISER IS WELL BRACED. PIPING AND PUMP. anchored and supported to prevent unnecessarily high stresses from damaging the valve or any adjacent connectors. Due to thrust loads at the time of discharge. WHICH COULD LEAD TO SERIOUS INJURIES. Recommended downstream setup Note: Refer to the Parts and Drawings Section when item numbers are referenced. Figure 3-1. FAILURE TO DO SO COULD CAUSE SEPERATION OF PIPING AND/OR CONNECTIONS AT THE TIME OF DISCHARGE. ANCHORED AND SUPPORTED. FLUID REMAINING IN THE DISCHARGE LINE COULD FREEZE AND PREVENT DISCHARGE FROM THE VALVE.RX 36000-02 & -03 IN FREEZING ENVIRONMENTS. adjacent piping for a relief valve installation requires all piping be properly braced. THIS COULD BE DETRIMENTAL TO THE VALVE. Installation and Operation Manual Reset Relief Valve -. 6 MANUAL: M-36000 www.com . (3) inaccurate or improperly calibrated gauges. are for mating up with 3-1/2”- SCH. or (4) an improperly maintained valve. Valve should be stored in an upright position. Such a practice could cause inadvertent opening of the valve. Internal parts should stay lubricated with synthetic grease. Storage Recommended procedure for extended storage Relief Valve should be stored inside a cool. Mobil SHC 220. the valve may appear to discharge at a lower (or higher) pressure than indicated by the valve setting. especially at high pressures. Note: Back pressure on the valve (usually due to hydrostatic head pressure from a column of fluid in the discharge line) is usually undesirable.RX 36000-02 & -03 Standard butt weld hubs normally supplied with this valve when requested (p/n 31953). the valve should be disassembled. Field Setting Procedure Valve “Calibration” 4-1 The “zero setting” 4-1 The “Span” setting 4-2 Hydrostatic Pressure Testing (in plant only) 4-2 Field Setting Procedure Valve “Calibration” The valve adjusting nut (item 32) should be tightened (rotated clockwise looking at the top of the bonnet) to increase the compression on the load springs and thus increase the setting indicated by the calibration plate. This will also prevent flange separation and the resulting flange-to-body seal failure.Installation and Operation Manual Reset Relief Valve -. lubricated with recommended lubricant. due to the balanced design of the Titan “RX”.) piping. The release of drilling mud. XXH (4. especially when inadequate or poorly operating pulsation dampeners are installed. It is generally undesirable to bring a mud pump on-line with the valve at an abnormally low pressure setting. Operators are advised to always try to isolate and shut down a pump as quickly as possible when the relief valve for that pump discharges. the bonnet pulled and the piston cap seal and o-ring inspected and changed. Mobilith or equal. Clear all debris from internal parts. However. Likewise.728” I. can be very destructive to internal valve parts. see Section 6. If additional information is needed. (2) pressure pulsations.D.D. protecting the piston and internal parts. Going from a higher setting to a lower setting with pressure on the valve could 7 MANUAL: M-36000 www. In some operating conditions.000” O. This phenomenon may sometimes result from (1) a lag between the actual system pressure and the pressure gauge reading. For assembly procedures.com . Torque the (6) flange bolts (item 50) gradually in a crossing pattern so that the adjacent sealing faces of the flange and body remain parallel. The correct position of the adjusting nut is shown by an indicator (item 33) mounted on the upper spring retainer and the calibration plate (item 36) mounted adjacent to the indicator on the bonnet cover (item 29). the nut should be loosened to lower the set pressure. Always verify the pressure setting by examining the indicator and calibration plate prior to placing the valve in service. Doing so can help to increase the life of the valve and its internal parts. controlled environment. back pressures less than 100 psig will have little if any affect on the operational accuracy of the valve ! CAUTION ! CAUTION ! CAUTION ! DO NOT ATTEMPT TO RESET THE VALVE WHILE THE PUMP IS IN OPERATION. If the valve is in storage more than 6-15 months.nov. please contact your sales representative or call the location shown on the cover of this manual. x 2. especially for gauges with dampening devices. The adjusting nut (item 32) moves the upper spring retainer (item 34) thereby increasing or decreasing the amount of spring compression and thus spring force against the arm of the crank. NOV can provide a complete portable test unit for a modest price. Drive out the ¼” Spirol Pin (item 40) from the back side (bonnet side) of the lower spring retainer. contact the factory. For calibration purposes.RX 36000-02 & -03 inadvertently cause the valve to “trip”. Reset the valve and slowly increase internal pressure until the valve “trips”. we will expect the valve to “trip” at an additional 100 PSI on the high end (span setting). it is important to verify the operating characteristics of the valve in a particular system and with the mud being used to determine if any additional adjustments are needed. the valve may be made to “trip” at exactly 2000 PSI or plus 100 PSI. a faulty main crank. If the operator is unable to achieve satisfactory performance from the valve after following normal calibration procedures. both settings (low and high) may be either increased or decreased but they may not be moved closer together or farther apart. the load screw may only be adjusted in half-turn increments (with the flats on the load screw left perpendicular to the lower spring retainer). Replace the bonnet cover using new NOV socket head cap screws. the valve “Zero setting” is low (too little initial spring compression). because of the variety of mud types. Installation and Operation Manual Reset Relief Valve -. Because it will be locked in place by the 1/4” Spirol pin upon successful completion of the calibration procedure. more initial spring compression is required and vice versa. If we increase the initial spring compression. The “Span” setting: Hydrostatic Pressure testing (in plant only) Tighten the adjusting nut until the indicator points precisely to the highest setting on the calibration plate. In other words. Although all NOV Reset Relief Valves are calibrated at the factory. If the valve “tripped” early. If the valve “tripped” before the gauge reached the pressure indicated on the calibration plate. Remove the adjusting nut (item 32). secure the load screw with the Spirol pin (item 40) by driving it into the lower spring retainer (against the bonnet) until the end is flush with the outboard side of the lower spring retainer. let’s assume that we are working with a typical 2000-8000 PSI valve assembly. two load springs (item 37). If the valve is not within acceptable tolerances.nov. In order to correct the zero setting. Slowly increase internal pressure until the valve operates (“trips”). Note the pressure on the gauge at this point. The “zero setting”: Adjust the valve to its minimum pressure setting as indicated by the calibration plate and indicator. it is possible to bring both values closer to the desired setting. Operate the reset lever to “set” the valve (close the piston). Looking down on the upper face of the lower spring retainer. Actual Valve “Trip” Pressure 8 MANUAL: M-36000 www. In short. Valves which do not calibrate properly may have one or more faulty load springs. As such. We will rerun the span procedure to confirm. upper spring retainer (item 34). However. For example. If possible. the two flats on the lower end of the load screw (item 38) will be used to change the initial compression on the load springs. For Titan Class “RX” valves. a clockwise rotation of the wrench will drive the load screw farther into the lower spring retainer. As mentioned. four socket head cap screws (item 50) and the bonnet cover (item 29) so that the lower spring retainer can be lifted and turned. by going back to the “zero” setting and increasing the initial spring compression. the system pressure should be built up slowly and gradually with little or no pressure pulsations.com . the line pressure should be built up slowly to allow for the actual system pressure and gauge pressure to stabilize. Repeat this entire procedure after reworking valve. Set Point vs. an accurate “test” gauge should be used (usually plus or minus 1/4% of the full scale reading). Replace the remaining components. very close to the desired 8000 PSI.000 PSIG TEST PRESSURE Acceptable Tolerance. you can not perform the basic calibration procedure to make the valve more accurate. Increasing the set point with pressure on the valve is generally not a problem. If any gauge with a built-in dampening device is used. it is time to check the “span” or upper setting. If the valve initially “tripped” at 1900 PSI for the “zero” setting and then “tripped” at say 7900 PSI for the “span” setting. when testing the high setting. noting the gauge pressure indicated. If the valve is within acceptable tolerances at both the low and high set points. to make the valve “trip” right at 2000 PSI we could expect the valve to “trip” at around 8600 PSI which would be totally unacceptable. if the valve “trips” at 1700 PSI at the low end and at 8300 PSI at the high end. replace the load springs or look for mechanical problems. a worn upper link pin (which most often causes erratic valve behavior). Please refer to the section on valve calibration in this section. any in-plant or customer-witness hydrostatic pressure testing will be limited to the following maximum values: 8.000 PSIG WORKING PRESSURE 12. Use a 3/8” open end wrench to tighten the load screw further into the lower spring retainer if the valve “tripped” early. or binding linkage. The gauge should be connected so that it indicates pressure in the lower end of the valve. The amount of change will vary somewhat between valves but a half turn of the load screw should cause approximately a 50 psig (higher or lower depending on the direction of rotation) change in the “tripping” pressure of the valve. Once the “zero” setting is close. excessive seal friction due to corrosion. The valve should be bench tested on a regular basis to verify proper calibration and accuracy. psig Acceptable Tolerance 2.RX 36000-02 & -03 Pressure Range. pitting or scarring. The inner surface where the seal seats must be clean and smooth or the valve will leak. The success and performance of the valves rely on links inside that connect the piston to the bonnet.000-8. a lever inside the reset crank pushes the links into alignment. Valves must be reset in a straight line to work properly. Before re- installing the bonnet assembly. check piston seal for wear and insure links are fully reset (the reset button should be extended 3/8 inch). Make sure the reset crank handle pin is tight. If the valve is not within acceptable tolerances. Test is complete. When the valve is fully reset. slowly increase internal pressure to that of working pressure. Sometimes the pressure activated lower piston seal may be swollen preventing the valve from resetting. If valve is leaking on outside between bonnet and body remove stem bushing seals. any in-plant or customer-witness hydrostatic pressure testing will be limited to the following maximum values: 8. Bleed pressure to zero. and related seals only. between piston cap and insert. If fluid is leaking through discharge side remove the flange/discharge line on valve outlet side and clean the inside of the valve from the discharge side. replace the lower piston cap seals. seat insert. Troubleshooting Problem Solution If the valve cannot be fully reset even when using an extension wrench check the pump to see if it’s turned off and there is no back pressure on valve. Re-pressurize valve to the specified pressure required and hold for 15 minutes. the test is successful. If fluid is leaking from top. the links will be straight and the piston will be down. push the reset button in and reset the valve 2-3 times. Check if the crank is not bent. also check if the inner stem seal is installed properly and has not rolled up on piston stem. If the fluid is leaking from bottom i. replace the load springs or look for mechanical problems. The links must be in a straight line (3O off center) for the valves to hold pressure. preventing the valve from resetting. remove the bonnet assemble and replace the upper piston – shoulder seal. Check piston and body for wear.nov. turn off the pump and drain all the fluid from the valve body. There is a stop inside the valve when the links are in the correct position.000 PSIG TEST PRESSURE (Test pressure applies to the sub-assembly: valve body with sub. New seals are stiff and tight. Reset Relief Valve Troubleshooting Guide 5-1 Reset Relief Valve Troubleshooting Guide NOV Reset Relief Valves are fairly easy to operate and are reliable and stable when properly used and maintained. Once the joint is out of line. If the valve does not hold pressure.Installation and Operation Manual Reset Relief Valve -. more effort to reset the valve may be required.com .000 +200 psig If the valve is within acceptable tolerances at both the low and high set points.e.) With the valve in the “set position” and springs compressed for maximum pressure setting. If the valve calibration has changed. drain all the fluid out and replace the lower piston seal. Check for foreign substance in the valve that’s blocking the piston from resetting. replace the load springs if they are shorter than 7 inches. If you have any more problems contact NOV service guys or NOV facility for repair. in this case. This seal can be used again when it shrinks back to original shape after drying for few minutes. When the reset relief valve seals are new. When pushing the handle forward to reset the valve. Inspect links and link pins for wear or bent. secure the load screw with the Spirol pin (item 40) by driving it into the lower spring retainer (against the bonnet) until the end is flush with the outboard side of the lower spring retainer. Hydrostatic Pressure testing (in plant only) For Titan Class “RX” valves. Check for leakage. If there is more than surface/superficial rust proceeds to send the valve body to NOV facility for further evaluation.000 PSIG WORKING PRESSURE 12. Assembly / Disassembly Procedures Lower Piston Disassembly 6-1 Bonnet & Linkage Disassembly 6-2 9 MANUAL: M-36000 www. bleed pressure to zero. If the valve is still leaking. Repeat this entire procedure after reworking valve. Use a flashlight and check for fluid leaks. If no leakage is observed outside the valve and if no apparent leakage is visible from monitoring the gauge. the links retract (due to exceeding set pressure) and the valve trips. hold hydrostatic pressure for 3 minutes and check for leakage. check the inner valves of the body for rust. Follow calibration procedures. the reset button on the backside of the bonnet sticks out approximately 3/8 inch. 2. holding the bonnet firmly loosen and remove the piston cap (item 4) from the piston body (item 3). 5. If not. Again. lubricate the upper end of the body as well as the lower and upper end of the piston. Verify that the stem bushing seal (item 14) has disengaged its respective seal bore in the body.com . Lubricate the threads and collars of four NEW cap screws (item 54) with a nickel base anti-seize compound and using a crossing pattern. Verify that the piston shoulder seal (item 9) is in good condition. 10 MANUAL: M-36000 www. The steps required to accomplish this task are as follows: Danger Failure to safely bleed off internal pressure prior to bonnet or flange removal could cause serious bodily injury or even death. correcting this problem will require complete removal of the piston sub-assembly from the bonnet.RX 36000-02 & -03 Lower Body Disassembly 6-4 Lower Body Assembly 6-4 Bonnet and Linkage Assembly 6-5 Body Flange/Adapter Assembly 6-7 Assembly / Disassembly Procedures Lower Piston Disassembly Note: Replacement of the lower piston seal ring (item 7) or any of its associated components requires that the bonnet assembly first be removed from the body. clean and inspect the seat insert (item 2) in the lower end of the body. dings. it will require replacement. and reassemble the lower end of the piston. See the "Bonnet & Linkage Disassembly". Correcting this problem will require complete removal of the piston sub-assembly from the bonnet. DO NOT attempt to repair a leaking valve by merely replacing the lower piston seal when the seat insert is also damaged. 3. 1. Pull up on the bonnet until the bonnet flange is again in contact with the face of the screws. Verify that the seal bores in the upper end of the body are free of marks. Only then the (4) cap screws may be completely removed from the body along with the bonnet sub-assembly.nov. Replace item 7. the bonnet sub-assembly may be reinserted into the body. particularly all sealing elements. ! CAUTION ! CAUTION ! CAUTION ! NEVER REUSE BONNET CAP SCREWS (ITEM 54). and corrosion prior to reinstalling a cleaned up or rebuilt bonnet assembly. After removing ALL internal pressure from the body. Also. the lower piston seal (item 7) and the inboard seal retainer (item 8) from the piston body. 6. If not. (Never reuse the lower piston seal (item 7)) along with two of item 8 if necessary. 4. there could be damage to the inner stem bushing seal (item 10) or excessive corrosion on the internal bore of the stem bushing (item 6). See the "Bonnet & Linkage Disassembly". Inspect the outer stem bushing seal (item 14) for damage and replace if required. see the "Torque Chart". contingent upon the inspection performed in step 2. scratches. torque the screws to specification. Clean the upper bores of the body with a soft cloth. Again. Verify that the piston slides freely in and out of the stem bushing. Remove the outboard seal retainer (item 8). loosen all four bonnet socket head cap screws (item 54) about 3 turns. 7. Inspect the piston cap face seal (item 11) for damage and replace as required. Using high quality synthetic grease. Installation and Operation Manual Reset Relief Valve -. Note the orientation of all components for correct assembly of the piston. lift off and remove the cover. Note the amount of stud protruding from the cover so that the replacement part may be reinstalled properly as before. carefully remove the two “clock” or linkage springs (item 25). Note: Pulling back on the release button and locking it in the retracted position with a small block (or other item which may be used temporarily as a spacer) during this operation will keep the inboard end of the release shaft (item 45) from interfering with the removal of the pin (item 19). Using a pair of needle nose pliers. replace both springs with new NOV parts. push the release shaft inboard until it clears the notches in the release shaft retainer (item 46).RX 36000-02 & -03 Bonnet & Linkage Disassembly Note: This procedure assumes that the bonnet sub-assembly has been safely removed from the body following the procedure in step 1 of "Lower Piston Disassembly" on page 6-1. 9. Check the load springs for yielding. 10. 7. If either spring is less than 7. 2. If the reset crank (item 30) or the reset handle (item 16) must be replaced. replace both springs and re-calibrate the valve. If the reset roller (item 31) must be replaced. 3. 6. Slide the reset handle off of the reset crank. The crank may now be lifted out and completely removed from the bonnet. punch out the 1/8” Spirol Pin (item 44) and slide the roller from the reset crank. Remove the spring guide rod (item 28) along with the reset spring (item 23) and the keeper (item 27) from the bonnet. 8. If the adjusting stud (item 35) must be replaced. The piston along with the linkage may now be carefully pulled out of the lower end of the bonnet. With the remaining bonnet assembly resting above the piston (item 3) which is to be positioned firmly on a flat surface. this is a somewhat tedious task and replacement of the bonnet sub-assembly is generally the better choice. hold the inboard end from rotating with a drift pin while rotating the release button (item 47) CCW. Lift the load screw up through the crank for complete removal from the bonnet. Replace the roller with a new one and install a new pin. 11. the bearing (item 15a) may be removed from bonnet (item 15) with a 19/32 punch. 5. remove the shaft seal o-ring (item 43) and pull the reset crank out of the bonnet cover. Remove and discard the four cover cap screws (item 50) from the bonnet cover (item 29). punch out the ¼” Spirol Pin (item 40) in the bonnet cover and unscrew the stud. 11 MANUAL: M-36000 www. 13. If the outer tab is more than 30 degrees out of alignment with the inner tab. With the release button removed. A large slotted screw driver may be used to loosen and remove the release shaft retainer (item 46). lift lower spring retainer and turn it so that the ¼” diameter pin can be driven out from side adjacent to the bonnet. Rotate the load screw (item 38) CCW to remove it from the lower spring retainer (item 39). punch out the 5/16” Spirol Pin (item 24).com . 12. If required. If the crank (item 22) must be removed.nov. it may be pressed out of the bonnet cover (with the proper tooling) and replaced with a new one. Remove the top crank pin (item 26). Now the release shaft and release shaft spring may be easily removed from the bonnet. The tabs which hold the spring in place (one on the inside and one on the outside) should be in alignment with each other. Completely remove the adjusting nut (item 32) and lift off and remove the upper spring retainer (item 34) and the two load springs (item 37). Punch out the 1/8” pin (item 19) in upper link. rotate the upper link (item 21) into a horizontal position (as if the valve had “tripped”). Examine both springs for damage. Again. 1.00” in overall length. If the cover bearing (not ballooned) is damaged. Punch out the 1/8” pin (item 44) from the crank to remove the crank pivot pin (item 41). If it is necessary to remove the release shaft (item 45). 4.Installation and Operation Manual Reset Relief Valve -. If a bushing is loose. Remove the stem bushing by sliding it off of the small end of the piston. 12 MANUAL: M-36000 www. Check straightness by laying a straight edge against the end flat on each side of the link. Clean and inspect the union components for damage. has chipped or otherwise damaged edges. 2. Removal of the sub (item 5) can be difficult at times. We will assume that the valve assembly has been removed from the line and that the bonnet/piston assembly has been removed from the valve. Again. Looking at the inlet of the body. Holes will have to be drilled in the table to match the bonnet bolt pattern. 19. or is wallowed out. If the valve was supplied with butt weld flanges and the body is out of the line. These pads MUST be placed in the same position during assembly (the pad end of the lower link is to be farthest away from the bonnet flange while both pads are to face towards the release shaft button). 6. or otherwise questionable parts. the inlet adapter will need to be removed. corrosion. always replace both lower links—never just one. 20. Carefully remove the inlet flange adapter from the body and set aside. 16. In some cases. applying a penetrating oil or similar substance to the sub may help with its removal from the body. Check lower links for straightness and/or ovaling of the link pin holes. 15. 4. Inspect both the bushing outer seal (item 14) and the bushing inner seal (item 10) for wear or damage. damaged. Using a 12-point socket or box end wrench. it is always a good practice to replace any and all worn.nov. Installation and Operation Manual Reset Relief Valve -. 3. Flip the body upside down (bonnet end down) and attach it to the work table using discarded bonnet cap screws or place the body (in a similar position) securely in a large vice. Clean and inspect the face seal groove for damage or corrosion and inspect the seal. and the sealing faces on the inboard and outboard ends. rotate the sub counter clockwise to loosen and remove the sub from the body. Check all pressed-in bushings. It is best to carefully anchor the body when removing the sub. If the valve was supplied with 1502 connections (see section 8). the 6-bolt flange will have already been disconnected. 5. Disassemble upper link and lower links by punching out four 1/8” pins (item 19) and removing the two link pins (item 18).com . Insert the lugs of the sub wrench into the sub. A worn pin may show cracks or dings in the surface or may no longer be perfectly straight and or round. If a pin is not straight or shows signs of wear. This may be done by using a minimum of 2 bonnet cap screws to bolt the body to a work table. it should be replaced. Note Usually. If either link is distorted. Check the outside diameter of the piston and all sealing surfaces for signs of wear. Clean and inspect both glands for damage or corrosion. If required.RX 36000-02 & -03 14. the radial seal groove. Lower Body Disassembly 1. it should be replaced with a new NOV part. 18. 17. Check all link pins and crank pins for straightness. or other damage that might impair the effectiveness of a new seal. loosen and remove all 6 flange cap screws from the valve inlet. Check the small pads on one side of each lower link for damage from contacting the pad on the main crank. while the valve is completely disassembled. especially in the threaded area. It will require using the special sub wrench listed in the tool section. It is important to note the position and orientation of the pads on both lower links. the bearing (item 21a) may be removed from upper link (item 21) with a 15/32 punch. Clean the sub (item 5) and inspect it for damage. this is a somewhat tedious task and replacement of the upper link sub-assembly is generally the better choice. inspected. Place the stem bushing sub-assembly aside. Lubricate and install new seals (items 10 and 14) in the stem bushing (item 6). Place the second seal retainer (item 8) over the piston seal.-lbs. Verify that the insert shoulder is fully seated against the step in the body. check the body and sub for thread damage. as far as it will go. 1. Be sure that the face seal (item 11) remains fully in its groove during make up. 5. threaded end last. Orientation of both links is critical. Carefully slide the bushing down towards the big end of the piston. Place the first seal retainer (item 8) over the nose of the lower end of the piston as shown in the assembly drawing. 3. Carefully clean and inspect the insert for damage. and are found in good condition. Install a new sub seal (item 12) into its groove in the sub. Lower Body Assembly Use the procedure described in "Lower Body Disassembly" on page 6-4 for mounting and holding the valve body while working on the lower end of the valve. 7. 9. Do not reuse Spirol pins 2. Use a nickel base anti-seize compound to lubricate the threads and sealing surfaces of the lower end of the body prior to assembly. Using the sub wrench. Bonnet and Linkage Assembly 1. Do not force. with the bonnet side of the valve body facing downwards. Upper and lower links should fit snugly with the link pins but both link pins should turn freely in their respective bushings. orientation of this seal is critical. large end first. especially the threads and the seal bore for the sub seal (item 12).nov. 8 (2x).com . Install a new seat insert face seal (item 13) into its groove in the insert. Assemble the “thick” end of the upper link (item 21) between the upper ends of the lower links with the second link pin (item 18) and again secure with two 1/8” Spirol pins (item 19). Assemble the two lower links (item 20) to the upper end of the piston with the first link pin (item 18). Also lubricate the threads and inboard face and radial sealing surfaces of the sub prior to assembly. face seal side up. As mentioned in step 1. Clean and inspect the lower valve body internals. 3. The spring energizer MUST be oriented towards the upper end of the piston as shown.RX 36000-02 & -03 7. Slide the stem bushing sub-assembly (from step 1) over the lubricated end of the piston. especially the internal seal surface (I. Remove the seat insert (item 2) from the body along with the insert face seal (item 13). The link bosses should also be oriented away from (not adjacent to) the bushing in the piston.) and the face seal groove. Continue making up the sub until it bumps against the seat insert. If this is not possible. 2.Installation and Operation Manual Reset Relief Valve -.-lbs. Take care not to damage piston seals (items 7 and 9) during assembly. The piston sub-assembly is now complete. 5. Again. torque the sub to 800-1000 ft. 4. Assemble the piston body (item 3) with items 4. The links should have side bosses facing the same direction (away from the piston centerline). If the body (item 1). sub (item 5). they may be reassembled. protect the outboard sealing face of the sub when flipping the body over for bonnet assembly. 4. Secure links with two 1/8” Spirol Pins (item 19). Make up the sub into the body by hand. 13 MANUAL: M-36000 www. Torque the cap to 80-100 ft. Carefully place the piston seal (item 7) over the nose of the lower end of the piston and against the first seat retainer. place the seat insert into the lower body cavity. 8. Place the face seal (item 11) into its gland in the piston cap (item 4). Note that the inner seal (item 10) MUST be installed with the seal lip energizer facing the large end of the stem bushing.D. seat insert (item 2) are all cleaned and free of damage. install a (lubricated) shoulder seal (item 9) into its gland on the upper end of the piston. Always use new sealing elements when reassembling this valve. Do not proceed with bonnet and linkage assembly unless all part have been cleaned. and 11. Place the sub into the lower body cavity. Failure to install this seal properly could cause the seal to leak and fail. Screw the piston cap (item 4) into the lower end of the piston. When the transverse slot in the top crank pin is aligned with the hole through the upper link. With no other components yet attached to the bonnet. The inner tab of the spring should slide into the slot in both ends of the top crank pin. Drive the Spirol pin (item 44) through the hole to secure the crank assembly. Press against the outboard side of the spring to assure that it is fully against the side of the crank and fully engaging both slots. Alternatively. Align the hole in the reset crank with the hole in the handle and secure both parts with a 5/16” spirol pin (item 24). Slide the release shaft spring (item 48) over the threaded end of the release shaft. (The piston is now basically in the “tripped” position). Drive a 1/4” Spirol pin (item 40) about 1/4 to 3/8” into one side of the lower spring retainer (item 39). Slide the middle section of the crank over the bushing in the top of the bonnet. With the spring guide nubs facing upwards and the Spirol pin facing away from the bonnet. the release shaft may be pushed towards the middle of the bonnet to allow for use of a large slotted screw driver to make up the release shaft retainer. through the hole in the crank assembly and out through the lower side of the bonnet. the threaded end of the release shaft may be pined with a center punch to prevent inadvertent loosening of the release shaft button. Again. without disturbing the related parts. place a 7/64 drift through the upper link to hold both members in place. Place the reset handle (item 16) over the reset crank shaft with the large chamfer facing the o-ring (and cover). 9. Place the crank assembly (item 22). Slide the release shaft retainer (item 46) over the release shaft. 10. Note that the transverse hole in the crank pivot pin must be oriented with respect to the matching hole in one side of the crank assembly. The short crook or bend in the very end of the outer end of the spring should face towards the release shaft button. threaded end first. 11. Carefully remove the drift and. 14. 13. with its two bushings. Use a few drops of non-permanent thread locking compound to secure the release shaft button. orientation of the bosses on the lower links is CRITICAL to proper valve operation. With the lower end of the piston resting on a flat surface. 7. Both lower links should be against the side of the bonnet. Installation and Operation Manual Reset Relief Valve -. Align the crank assembly hole with the bonnet bushing and insert the crank pivot pin (item 41). Push the release shaft towards the outboard side of the release shaft hole in the bonnet so that the threaded section protrudes from the bonnet. The end of the load screw should protrude from the lower side of the lower spring retainer by about 1/4”. Tap the pin carefully until it passes the top crank pin. Insert the large end of the reset crank through its respective hole in the bonnet cover from the inside. Align the small end of the crank over the hole for the load screw.com . Screw the release shaft button on to the release shaft. Slide the release shaft (item 45) into its respective hole in the side of the bonnet (big end first). make the load screw up into the lower spring retainer. Insert the linkage (attached to the piston) through the bottom of the bonnet with side bosses of lower links facing release shaft hole. The end of the pin should be flush with the outer surface of the crank as shown in the assembly drawing. just to hold it in place. Place one linkage (or “clock”) spring (item 25) over each end of the top crank pin. Lay the bonnet assembly on its side with the piston extended in the “set” position. 8.RX 36000-02 & -03 6. Use a pair of needle nose pliers to grab the outer tab of the spring to wind it “tighter” approximately 90 degrees and slip it into the slot in the crank. into the cavity in the top of the bonnet. 14 MANUAL: M-36000 www. Now allow the bonnet to move downwards and the upper link to move to the near horizontal position until the parts rest against each other. drive one 1/8” Spirol pin through the hole in the upper link. Align the hole in the upper end of the upper link with its respective hole in the crank assembly.nov. 12. Insert the load screw (item 38). Slide the top crank pin through the hole. 15. notched end last. Rotate and slide the crank pivot pin so that the transverse hole is in line with its respective hole in the crank assembly. Place the weather seal o-ring (item 43) over the reset crank shaft from outside the bonnet cover. steady the bonnet while rotating the top crank pin with respect to the upper link. Slide the reset roller (item 31) over the small end of the “Z” or reset crank (item 30) and secure it with one 1/8” Spirol pin (item 44). Apply several drops of non-permanent thread locking compound to the threads of the release shaft retainer prior to making it up fully into the bonnet. any and all moving parts. will cause the valve to operate improperly. Place reset spring (item 23) over the spring guide rod (item 28) and insert one end of the rod into the shallow hole (or divot) inside of the bonnet. Orient the reset handle so that it is opposite the discharge side of the valve body. The valve is now ready for calibrating. Torque all twelve screws (6 on the inlet flange and 6 on the outlet flange) to the torque prescribed in the "Torque Chart" on page 16 2. After the union is mostly made up by hand. or 6-bolt x 3”-1502 male may be attached to or removed from the body of the “RX” valve assembly.1502 Male 3” . Correct calibration .The relief pressure indicator should accurately indicate the actual relief pressure. Cocking of the flange will lead to early failure (blow our or extrusion) of the flange face seal.com . Never try to start a thread using a hammer. Screw the adjusting stud (item 35) into the bonnet cover (milled notch end first) until the end is flush with inside surface of the cover. 19. it is important to first install the flange face seal (item 53) into its face groove in the flange. 36000 Series Titan Class “RX” Valve Assembly Table Assembly Pressure Connection P/N Range Inlet Outlet 36000-02 2000 . care must be taken to protect the threads and sealing surfaces of these unions at all times when the valve is removed from the line. 6-bolt x 3-1/2”-XXH butt-weld. Tighten all four screws in a crossing pattern according to the "Torque Chart" on page 16 18. After lubricating the body bores and piston seals stab the piston carefully into the upper end of the body. Body Flange/Adapter Assembly 1. Torque all six cap screws in each flange little by little in a crossing pattern so that the flange face does not become cocked with respect to the face of the mating body.RX 36000-02 & -03 16. Using worn or damaged union parts can cause failures which could lead to serious bodily injury. Secure the bonnet cover using only New NOV cap screws lubricated with a nickel base never seize compound. tilt it back to view the keeper.Installation and Operation Manual Reset Relief Valve -. it may be tightened using a hammer. Tighten all four screws in a crossing pattern according to the torque shown in "Torque Chart" on page 16. especially parts associated with the linkage assembly. It is also important to make up all six 12-point flange cap screws (item 51) with their respective helical lock washers (item 52) to the hand tight position prior to applying torque. and guide the keeper over the end of the spring guide rod prior to placing the cover fully against the top of the bonnet. Three to four blows on the nut member after initial rotation has ceased should suffice to achieve the proper preload. Secure the bonnet using only New NOV cap screws lubricated with a nickel base never seize compound. On assemblies with the 3”-1502 union connections. Secure the stud by driving one ¼” spirol pin (item 40) through the cover until the outer end is flush with the outer surface of the cover.8000 PSI 3” . Usually. When the valve has been completely torn down and reassembled. Set both load springs (item 37) on the lower spring retainer (item 39) and place upper spring retainer (item 34) over the top of the adjusting stud and allow it to move downwards until it engages both springs. a 4 to 8 pound hammer is sufficient. Rotate the stud in or out slightly to allow the notch to align with the hole through the end of the cover. When attaching these flanges. it will be necessary to re-calibrate the valve. 6-bolt x 3”-1502 female. Rotate the reset crank to allow the spring keeper (item 27) to be inserted into its hole in the reset crank (from the outboard side). Adapter flanges. Position the cover (item 29) over the bonnet. Binding or interference between parts. Screw the locknut (item 32) on the adjusting stud until a minimum amount of compression is placed on the springs to hold them in place. even if no new components have been installed.1502 Female 36000-03 1500 .5000 PSI 3-1/2-SCH XXH BUTWELD 3-1/2-SCH XXH BUTWELD 15 MANUAL: M-36000 www.nov. Union hammer nuts should always engage their mating parts using hand force. 17. Press downwards on the bonnet until the bonnet flange mates with the body. Fill the bonnet cavity with grease by pumping grease through grease fitting (zert) (Must be well lubricated). Torque Size Quantity Where Used Torque. If a pressure gauge with a built-in 16 MANUAL: M-36000 www. Body I. bonnet retaining screws.2 5/8”.5 111676 Flange Adapters 569. It is recommended that the valve be calibrated every 6 months as a minimum. and Seals: Synthetic Lubricant Grease or Equal.11 SH Cap (4) 169+17 063150-10-15 Bonnet 229+23 1”-8 12-pt. After all. NOV may provide a portable manual pump with a proper test gauge (1/4% full scale) to aid the operator (reference part number 32590).-lbs--N-m Part No 1/2”-13 SH Cap (4) 85+9 204044-10-14 Cover 115+12. Flange screws. The grease acts as a rust inhibitor to protect against corrosion.nov. The recommended maintenance for the valves involves removing the bonnet assembly (refer valve disassembly procedure) every 2-4 weeks.com .D. this is a piece of safety equipment and it should be operated and maintained accordingly. Ft.7 Due to the variations in pulsation dampening from rig to rig and the resulting effect on component fatigue life.5+42. Apply grease the seals on the piston and to the inner side of the valve body where the piston slides in.RX 36000-02 & -03 Complete Bonnet Assembly Kits Assembly P/N Pressure Range 36013 2000-8000 PSIG Seal Kit Assembly P/N Pressure Range 36020 2000-8000 PSIG Maintenance 7-1 Torque 7-1 Inspection 7-2 Tools Required 7-2 Replacement Seal Kit for P/N 36020 7-2 Bushings 7-3 Maintenance The Titan Class “RX” Reset Relief Valve has been designed to require a minimum amount of maintenance. it is recommended that the 1/2” and 5/8” socket head cap screws not be reused but rather replaced with new cap screws when servicing the valve. and cover retaining screws must be checked for proper torque periodically. Please refer to the torque chart. For calibrating the valve in the field. Note: Recommended Lubricant P/N 2560 Upper Bonnet Assembly Parts (Top Works): Maxi Glide Teflon Gel Lubricant or Equal P/N 3015 Piston. Verification of the valve accuracy should be done on a regular basis. Installation and Operation Manual Reset Relief Valve -. flushing out the valve body and cleaning any debris. Cap (8) 420+31. Reassemble. 1”-12 pt. Needle nose pliers (for item 25) 11. Release Shaft Retainer Spanner. remove (4) Bonnet Bolts. reset button pushed in. 3/8 inch hex Allen or internal hex wrench (for item 50) 6. Valve is ready for reset. remove (4) Bonnet Bolts. Pull Top Work up vertically. 1/4 to 19/64 inch diameter x 1-3/8 inch (min. inspect piston seal and the body ID. Sub wrench assembly. Replacement Seal Kit for P/N 36020 Item Qty Part No 7 1 32501-2 9 1 31914 10 1 31909 11 1 702640-03-20 12 7 02640-24-31-HS 13 1 32519 14 1 702640-22-81 43 1 702640-21-01 53 2 702640-23-71-HS Spirol Pins The minimum number of Spirol Pins required for complete replacement of all pins in the valve is shown on the bill of materials and in the chart below: Item Qty Part No Basic Size 19 5 20712-02 1/8 x 5/8 24 1 20712-13 5/16 x 1-3/8 40 2 20712-04 1/4 x 1-1/2 44 2 20712-03 1/8 x 7/8 17 MANUAL: M-36000 www.nov. the following tools will be required: To inspect visually.) long straight shank punch (for item 40) 3. use large slotted screw driver (for item 46) 14. 7/32 to 15/64 inch diameter x 1-3/4 inch (min.RX 36000-02 & -03 dampening device is used. If possible. Wash any debris from the body and re-lube body and piston. O-ring pick In addition to these tools.com . 15/16 open end wrench or open end adjustable wrench (for item 4) 15.) long straight shank punch (for items 19 and 44) To perform service work on the Titan Class “RX” Reset Relief Valve. 2. the line pressure should be built up slowly and gradually with little or no pressure pulsations. Valve is ready for reset.3/32 to 7/64 inch diameter x 1 inch (min. inspect piston seal and the body ID. 1/2 inch hex Allen or internal hex wrench (for item 54) 7. 1-1/4 6pt. Tools Required 1. Large slotted screwdriver (for item 38) 9. Small hammer 5. the line pressure should be built up slowly to allow the actual system pressure and gauge pressure to stabilize. box end or socket wrench (for item 32) 10. with no pressure in the valve. NOV p/n 31873 (for item 5) 13. Pull Top Work up vertically.) long straight shank punch (for item 24) 4. with no pressure in the valve. socket and torque wrench (for item 51) 12. 3/8 open end wrench (for item 38) 8. a supply of new NOV spare parts should be available and on hand in order to speed the repair process.Installation and Operation Manual Reset Relief Valve -. or 12 pt. Inspection To inspect visually. reset button pushed in. Reassemble. Wash any debris from the body and re-lube body and piston. x O. x Length 3a 1 13229-10 3/8 x 1/2 x 23/32 15a 1 13229-08 1/2 x 5/8 x 1/2 21a 1 13229-13 3/8 x 1/2 x 5/8 22a 2 13229-13 3/8 x 1/2 x 5/8 29a 1 13229-12 3/4 x 7/8 x 1-1/8 Assemblies 8-1 36000-02 W/3”-1502 Connection Assembly drawing 8-2 36000-02 Titan Class “RX” W/3” -1502 Connections Parts List 8-3 36000-03 W/3-1/2” SCH XXH Butt-weld Connection Assembly 8-6 36000-03 W/3-1/2” SCH XXH Butt-weld Connection Assembly Detail A 8-7 Assemblies 36000-02 W/3”-1502 Connection Assembly drawing 18 MANUAL: M-36000 www.nov. The bushings shown in the chart below are not specifically “ballooned” on the assembly drawing but they are called out on the bill of material under the main item in the sub-assembly where they are used. Bushings Item Qty Part No Basic Size I.D. Installation and Operation Manual Reset Relief Valve -.com .RX 36000-02 & -03 Note: Refer to the Drawings and Parts List at the end of this manual for NOV part numbers and usage.D. F/ BONNET (SMALL) 1 18 23545 PIN. PISTON. TITAN RX 1 * 3 36003-01 PISTON BODY. TITAN 1 * 3a 13229-10 BUSHING. DESCRIPTION QTY SPARES 1 36002 BODY. LOWER 2 21 31977 UPPER LINK SUB-ASS’Y. STEM BUSHING OUTER 1 * 15 31939 BONNET. MACHINE TITAN “RX” 1 2 32524 SEAT. SUB-ASS’Y. RX/M2. RESET. SUB-ASS’Y. LINKAGE 2 26 31975 TOP CRANK PIN 1 27 30380 KEEPER.nov. SUB TO BODY 1 * 13 32519 SEAL. BONNET 1 16 30377 HANDLE.. LOWER LINK 2 19 20712-02 PIN. LOWER 1 * 8 32512 SEAL. SUB-ASS’Y.RX 36000-02 & -03 36000-02 Titan Class “RX” W/3” -1502 Connections Parts List ITEM PART NO. F/ PISTON 1 4 32500-02/M2 CAP.Installation and Operation Manual Reset Relief Valve -. INSERT. TYPE R. PISTON CAP. SUB-ASS’Y. TITAN CLASS 1 6 36011 STEM BUSHING 1 7 32501-2 SEAL. F/ COVER 1 30 30373 RESET CRANK 1 31 30388 ROLLER. FACE SEAL 1 * 12 702640-24-31-HS O-RING. SELF-LOCKING 1 19 MANUAL: M-36000 www. SPRING 1 28 30387 ROD. 1 21a 13229-10 BUSHING F/ UPPER LINK 1 22 38161 CRANK. SPRING GUIDE 1 29 38159 COVER. AJUSTING. FOR PISTON 1 5 31948/M2 SUB. MACHINED 1 17 32025-2 NAMEPLATE. 1 22a 13229-13 BUSHING. UPPER PISTON (SHOULDER) 1 * 10 31909 SEAL. SPIROL 5 20 20786 LINK. RESET CRANK 1 24 20712-13 PIN. RESET CRANK 1 32 5953-34 NUT. 5/8 1 15a 13229-08 BUSHING. F/ CRANK 2 23 30391 SPRING. FACE (F/INSERT) 1 * 14 702640-22-81 O-RING.com . SPIROL(FOR HANDLE) 1 25 20791 SPRING.STEM BUSHING. 1 29a 13229-12 BUSHING. RETAINER 2 9 31914 SEAL. INNER(VITON) 1 * 11 702640-03-20 O-RING. 3” 1502 FEMALE X 3” XXH BW 1 63 31926 SEGMENTS (3-PC) SET 1 64 31927 RETAINER RING 10/1502 1 65* 32025-3 TAG. RESET HANDLE 1 * 44 20712-03 PIN. and item 65 are the same for both the 36000-02 and the 36000.000 . RING. such as bar. are also available. SPIROL 2 45 30397 SHAFT. Calibration plates using other units of pressure. 1 47 30396 BUTTON. RELEASE 1 46 32052 RETAINER. SH CAP. TITAN CLASS 1 Note: Item number 65 is not noted with a balloon on the attached assembly drawing. LOAD 2 38 30389 SCREW. PLATE (2. RELEASE BUTTON 1 49 111656 SCREW U-DRIVE 16 50 204044-10-14 SCREW.nov. Please contact the factory.com . CRANK PIVOT 1 43 702640-21-01 O-RING. F/1002 & 1502 UNIONS 2 60 31925 NUT. LOWER SPRING 1 40 20712-04 PIN. ** Note: The calibration plate (item 36) is shown in psig units (pounds per square inch). Items 57 through 64 only apply to the 36000-02 assembly. P/N 31953. LOAD 1 39 30382 RETAINER. DETACHABLE 3” 1502 2 61 31931 SUB. Note: Items 1 through 55. Installation and Operation Manual Reset Relief Valve -. SH CAP. RELEASE 1 48 31868 SPRING. F/RRV COVER (LARGE) 1 56 31953 FLANGED ADAPTER 3-1/2” SCH XXHBW 2 57 31952 1502 FEMALE FLG CONNECTOR 1 58 31951 1502 MALE FLG CONNECTOR 1 59 31884 SEAL RING. FLANGE 2 54 063150-10-14 SCREW. UPPER SPRING 1 35 20798 STUD. SPIROL 2 41 30381 PIN. ADJUSTING 1 36 111344** CAL. Pascal.RX 36000-02 & -03 ITEM PART NO. on the 36000-03 (BW) assembly 20 MANUAL: M-36000 www. DESCRIPTION QTY SPARES 33 30379 INDICATOR.03 assemblies. kg/cm2. THREADED RELEASE SFT.8000 PSIG) 1 37 20805-04 SPRING. These are replaced by 2x item 56. 5/8 4 55 32025-1 NAMEPLATE. etc. FERRY HEAD 7/8 12 52 111690 LOCK WASHER 7/8 12 53 702640-23-71-HSO. ½ 4 51 111686 CAPSCREW. 3” 1502/1002 MALE X 3” XXH BW 1 62 31932 SUB. kilo. SET PRESSURE 1 34 30385 RETAINER. Installation and Operation Manual Reset Relief Valve -.nov.com .RX 36000-02 & -03 36000-03 W/3-1/2” SCH XXH Butt-weld Connection Assembly 21 MANUAL: M-36000 www. nov.com .RX 36000-02 & -03 36000-03 W/3-1/2” SCH XXH Butt-weld Connection Assembly Detail A 22 MANUAL: M-36000 www. Installation and Operation Manual Reset Relief Valve -.