Nupro Relief Valves

www.swagelok.com Propor tional Re lief Valve s R Se r ie s ■ Liquid or gas service ■ Set pressures from 10 to 6000 psig (0.68 to 413 bar) ■ 1/4 and 1/2 in. and 6 to 12 mm end connections Operation R series relief valves OPEN when system pressure reaches the set pressure and CLOSE when system pressure falls below the set pressure. ensuring set pressure adjustment Lock wire capability secures cap to maintain set pressure adjustment Quad seal eliminates leakage around stem during relief mode O-ring provides elastomer-to-metal seal for positive shutoff at seat.  For valves not actuated for a period of time. and 12 mm end connections—RL4 series meet specific safety codes. The system designer and user must determine when such codes apply and whether these relief valves conform to them. See Materials of Construction) End connections include gaugeable Swagelok® tube fittings and NPT or ISO pipe threads R3A series valve shown. and they are not certified to ASME or any other codes. initial relief pressure may be higher than the set pressure. Features High-Pressure Valves ■ Service up to 6000 psig (413 bar) ■ Multiple springs for a selection of set pressure ranges ■ 1/4 in. and 6 and 8 mm end connections—R3A series ■ 1/2 in.  Some system applications require relief valves to Low-Pressure Valves ■ Service up to 300 psig (20. ■  Low-pressure RL3 and RL4 series—the spring is already installed. and 12 mm end connections—R4 series Applications R series relief valves are proportional relief valves that open gradually as the pressure increases. Consequently. and 6 and 8 mm end connections—RL3 series ■ 1/2 in.6 bar) ■ One spring for the full set pressure range ■ 1/4 in. . Proportional Relief Valves Spring adjusts to provide desired set pressure Cap provides easy external set pressure adjustment Label identifies set pressure range Lock nut maintains cap position. apply the matching label to the cap. ■ High-pressure R3A and R4 series—select and install the spring that covers the required set pressure. they do not have a capacity rating at a given pressure rise (accumulation). (Other series use bonded disc. 68 to 1. 120 psig – 32 psig = 88 psig.5) 225 (15.  Subtract result from desired set pressure. indication of flow occurs.8 to 13.5) 4910 (338) 4910 (338) 4910 (338) 4910 (338) — — 4660 (321) — — — — ➀  The pressure-temperature ratings are based upon laboratory testing to ensure that the cracking pressure does not deviate by more than 20 % from the initial room-temperature set pressure. MS‑06‑62. RL4 R3A. 40 psig 3 0. To compensate. Step 2.9) Minimum Resealing Pressure as a Percentage of Set Pressure. R4 Cleaning and Packaging All Swagelok R series relief valves are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10).4 to 103 bar) 2500 psig (172 bar) Neoprene Ethylene propylene Fluorocarbon FKM RL3 and RL4 300 psig (20.7) 850 to 1000 (58. Oxygen Service Hazards For more information about hazards and risks of oxygenenriched systems. .8 = 32 psig.3) 175 to 225 (12.Proportional Relief Valves  Technical Data Pressure-Temperature Ratings Series Working Pressure at 70°F (20°C) Set Pressure➀ Outlet Pressure➁ Fluorocarbon FKM R3A 6000 psig (413 bar). Low-Pressure Valves (RL3 and RL4 Series) System back pressure increases the set pressure of the valve.6 bar) 10 to 225 psig (0. Set Pressure and Resealing Pressure ■ Set pressure is the upstream pressure at which the first Back Pressure High-Pressure Valves (R3A and R4 Series) The effect of system back pressure is minimized by the design of these high-pressure valves.0 to 15.5) 225 (15. System back pressure is 40 psig. Test Set Pressure psig (bar) 10 to 20 (0.5 to 68. °F (°C) –40 (–40) –30 (–34) –10 (–23) 0 (–17) 10 (–12) 25 (–4) 30 (–1) 50 (10) 150 (65) 200 (93) 250 (121) 275 (135) 300 (148) Buna N Buna N Buna N Maximum Set Pressure. Step 1.5 bar) 225 psig (15.  Multiply back pressure by 0.4 to 413 bar) 1500 psig (103 bar) Neoprene Ethylene propylene Fluorocarbon FKM R4 6000 psig (413 bar) 50 to 1500 psig (3. Step 3. Resealing pressure is always lower than set pressure. Testing Every R series proportional relief valve is tested for set and resealing performance. MS‑06‑13.8.5) 100 to 200 (6. ➁ Outlet pressure should not exceed inlet pressure. up to 8000 psig (551 bar) during relief 50 to 6000 psig (3.5 bar) Neoprene — Ethylene propylene Seal Material Temperature. Pre-set proportional relief valve to 88 psig. Example: Desired set pressure is 120 psig.68 to 15. Use the result to pre-set the valve while back pressure is equal to atmospheric pressure.8 and subtract the result from the desired set pressure. ■ Resealing pressure is the upstream pressure at which there is no indication of flow. see the Swagelok Oxygen System Safety technical report.5) 5160 (355) 5160 (355) 5160 (355) 5160 (355) 1500 1500 (103) (103) 1500 (103) (15. % 50 91 50 84 Series RL3. multiply the back pressure by 0. Set pressure of each valve after initial relief is repeatable within ± 5 % at room temperature. psig (bar) — — 6000 (413) — — — — — — — — 6000 6000 (413) (413) 6000 (413) 5580 (384) 5580 (384) 5580 (384) 5580 (384) 225 1500 (103) 225 (15.  Proportional Relief Valves Materials of Construction RL3 and R3A 1 2 3 4 RL3 only RL4 and R4 1 2 3 Component 1 Plug 2 Cap 3 Label 4 Lock nut 5 Spring 6 Sleeve Material Grade/ASTM Specification RL3. ➀  Material Safety Data Sheet for bonding agents available on request. R4—316 SS/A276 316 SS/A479 Fluorocarbon FKM PTFE-coated fluorocarbon FKM RL3. R3A—powdered metal 300 series SS/B783. R4—316 SS/A479 316 SS/A479 Fluorocarbon FKM-bonded➀ 316 SS/A479 316 SS/A479 PTFE-coated 316 SS/A240 316 SS/A479 Fluorocarbon FKM 316 SS/A479 316 SS/A182 Molybdenum disulfide-based dry film and paste. R3A—316 SS/A666. RL4. RL4. RL4. RL4. R4—brass 316 SS/A479 Polyester RL3. R4—316 SS/A276 S17700 SS/AMS 5678 304 SS/A240 RL3. 12a 13 19 RL3 R3A RL4 R4 . silicone-based 5 4 7  Spring support 8 Bonnet 9 O-ring 10 Quad seal 11 Retainer 12 Stem 6 7 8 6 9 10 11 R3A only RL4 only 5 7 12a Bonded stem 13 Bonded disc 14 Seat 15 Gasket 12 13 14 15 19 12 16 17 18 8 16 Seat retainer 17 O-ring 18 Insert 19 Body 9 10 11 12 Lubricants R4 only Wetted components listed in italics. R3A—nickel-plated brass. R3A—powdered metal 300 series SS/B783. 3 bar) 100 psig (6. psi Pressure Drop. std ft3/min Water Flow.8 bar) Set Pressure 550 psig (37.8 bar) 350 psig (24. std L/min Set Pressure 5500 psig (378 bar) R3A R3A and R4 Series Water Flow. bar Pressure Drop. std ft3/min Water Flow. U. psig Pressure Drop. psi Set Pressure 550 psig (37. gal/min Air Flow.7 bar) 200 psig (13. L/min R3A R4 Inlet Pressure. bar 4500 psig (310 bar) 4500 psig (310 bar) 3500 psig (241 bar) Air Flow. bar Pressure Drop.4 bar) Air Flow. L/min Set Pressure 225 psig (15.S. L/min Set Pressure 5500 psig (378 bar) R3A Inlet Pressure. L/min R3A R4 Inlet Pressure. std ft3/min Water Flow. psig Inlet Pressure. std ft3/min Water Flow. bar . std L/min Set Pressure 225 psig (15. psi Inlet Pressure.1 bar) 350 psig (24. psig Inlet Pressure.5 bar) Water RL3 RL4 RL3 and RL4 Series Water Flow.5 bar) RL3 RL4 Inlet Pressure.9 bar) 1000 psig (68. psig 150 psig (10.1 bar) 200 psig (13. U. U.S.Proportional Relief Valves  Flow Data at 70°F (20°C) Air RL3 and RL4 Series Air Flow.S.S. gal/min R3A and R4 Series Air Flow. bar 2600 psig (179 bar) Set Pressure 2600 psig (179 bar) 2000 psig (137 bar) 2000 psig (137 bar) 1000 psig (68. psi Inlet Pressure.9 bar) Air Flow. gal/min Pressure Drop. gal/min Air Flow. bar Pressure Drop. bar Pressure Drop. bar Pressure Drop.4 bar) 150 psig (10.8 bar) 50 psig (3. std L/min R3A R4 Water Flow.7 bar) Air Flow. std L/min Set Pressure 3500 psig (241 bar) R3A R4 Water Flow.8 bar) 50 psig (3. U.3 bar) 100 psig (6. 7) 3. SS-RL4M8F8 1.52 (140) 5.6) 0. SS-RL3M4-F4 female NPT Male ISO/ 1/4 in.89 (98.09 (104) 1.3) 5. (2.44 (36.60 (40.4 mm) fully open orifice 1.7) 3.70 (68.6 mm) fully open orifice Swagelok tube fittings 1/4 in.06 in.43 (36. (1.8) 4. and JIS B0203.2 mm) Swagelok tube fittings 1/4 in.60 (40.09 (104) 5. (4.09 (104) 5.6) 4.43 (36.83 (46.83 (46.3) 1. (3.6) 1. SS-RL4S8 12 mm SS-RL4S12MM 1/2 in.8) 1. (mm) A B C D E H R3A series: 0.6) 0. (1. SS-R4M8F8 1.2) 1.09 in.89 (98.7) 5.19 (30. SS-RL3M4-S4 tube fitting Male NPT/ 1/4 in.83 (46.19 (30.6) 1.6) 1.83 (46.06 in.5 mm) Size Ordering Number Dimensions. SS-RL3S4 6 mm SS-RL3S6MM 8 mm SS-RL3S8MM 2.8) 1.60 (40.92 (150) B 1.37 (136) D C 1.4 mm) fully open orifice Outlet Inlet 1.44 (36.52 (140) 5.9) 3.19 (30.5) 4.09 (104) 1.8 mm) fully open orifice 0.2) 1.89 (98.2) 1. in.14 (105) lock wire hole 0. DIN-2999. SS-4R3A 6 mm SS-6R3A-MM 8 mm SS-8R3A-MM 2.9) 3.50 (12.17 (29.09 in.17 (29.3) 1. (6. SS-R4S8 12 mm SS-R4S12MM 1/2 in.3) 1.8) RL4 series: 0.19 (30.5) 4. SS-4R3A5-RT female ISO➀ Swagelok tube fittings 1/2 in.3) 5.43 (36.89 (98.43 (36. in.25 in. BS EN 10226-1.19 in.5 mm) lock wire hole A max 0. (2.52 (140) High-Pressure Valves (R3A and R4 Series) End Connections Inlet/Outlet H max 0.92 (150) Outlet Inlet Valve with Manual Override Handle Male NPT/ Swagelok tube fitting Male NPT/ female NPT 1.43 (10.2) 1.2 mm) lock wire hole Male NPT/ Swagelok 1/4 in. Low-Pressure Valves (RL3 and RL4 Series) End Connections Inlet/Outlet Size Ordering Number Dimensions. (mm) A B C D E H RL3 series: 0. SS-R4M8S8 1/2 in.89 (98.7) 3.89 (98.70 (68.43 (10. Proportional Relief Valves Dimensions Dimensions are for reference only and are subject to change.6) 4. (6.43 (36.14 in.2) 1.25 in. SS-4R3A1 tube fitting Male NPT/ 1/4 in.50 (12.5) 0.8) 4.2) 1.19 (30.7) 3.17 (29. SS-4R3A5 female NPT Male ISO/ 1/4 in.6) 1.8) R4 series: 0.43 (36.37 (136) 1.52 (140) Dimensions shown with Swagelok tube fitting nuts finger-tight.14 (105) lock wire hole E max Male NPT/ Swagelok 1/4 in. SS-RL3M4F4-RT female ISO➀ Swagelok tube fittings Male NPT/ Swagelok tube fitting Male NPT/ female NPT 1/2 in.5) 0. ➀  See specifications ISO 7/1.60 (40.7) 5.3) 1. .17 (29.19 (30. SS-RL4M8S8 1/2 in. R3A rod.5) ➀ Use BU for R3A series seal kits. bonded stem.4 to 24. instructions instructions O-ring.7 to 103) Spring Designator A B C D E F G H A B C Spring Color Blue Yellow Purple Orange Brown White Red Green Blue Yellow Purple Seal kit basic ordering number Seal kit contents O-ring. Examples: S  S-4R3A-BU SS-RL3S4-BU To order a replacement seal kit. R4 instructions.7 to 103) 1500 to 2250 (103 to 155) 2250 to 3000 (155 to 206) 3000 to 4000 (206 to 275) 4000 to 5000 (275 to 344) 5000 to 6000 (340 to 413) 50 to 350 (3. retainer. Example: SS-RL3S4-SC11 Handle diameter is 1. set pressure must be adjusted.1) 350 to 750 (24. B. bonded disc.1) 350 to 750 (24.1 mm).7) 750 to 1500 (51. add -MO to the valve ordering number.4 to 24. retainer.7) 750 to 1500 (51. Select a spring kit ordering number. Series RL3 RL4 Spring Kit Ordering Number 177-13K-RL3 177-13K-RL4 Set Pressure Range psig (bar) 10 to 225 (0.50 in. and C R4 series spring kit: basic ordering number 177-13K-R4- springs only ■ R4 series—A spring only. To order.16 in. Example: SS-RL3S4-MO Manual Override Handle Kits Series Manual Override Kit Ordering Number SS-R3A-K5 SS-R4-K5 Kits contain handle. (131 mm) for R3A and RL3 series ■ 6. O-rings (2). Options and Accessories Seal Materials Fluorocarbon FKM is the standard seal material. instructions R3A series spring kit: basic ordering number 177-R3A-K1- Manual Override Handles A manual override handle opens the valve without changing the set pressure. and neoprene are available.68 to 15.1 to 51. label. Maximum overall height of valve with handle in closed position: ■ 5. quad seal.Proportional Relief Valves  Ordering Information Low-Pressure Valves (RL3 and RL4 Series) Valve contains spring. add -SC11 to the valve ordering number.1 to 51. Buna N. 316 SS spring support Special Cleaning and Packaging (SC-11) To order R series relief valves processed in accordance with Swagelok Special Cleaning and Packaging (SC-11). quad seal. spring support. add a valve seal material designator to the valve ordering number. insert a seal kit material designator as a prefix (R3A series) or suffix (all others) to the seal kit basic ordering number. High-Pressure Valves (R3A and R4 Series) Valve does not contain spring. spring support. retainer. and installation instructions. BU-R3A-K2 Examples:  SS-3K-RL3-BN RL3 Series SS-3K-RL3O-ring. (172 mm) for R4 and RL4 series. 177-R3A-K1-F Examples:  177-13K-R4-C Set Pressure Range psig (bar) 50 to 350 (3. Select a valve ordering number. quad seal. select the desired kit ordering number. instructions R3A Series -R3A-K2 RL4 Series SS-3K-RL4R4 Series SS-3K-R4Seal Material Buna N Ethylene propylene Neoprene Fluorocarbon FKM Designator Valves -BU -EP -NE — Seal Kits BN➀ EP NE VI Spring Kits Spring kits include spring and installation instructions. Select a spring kit basic ordering number and add the spring designator for the desired set pressure range.78 in. and RL4. ethylene propylene. (38. For use with: ■ RL3 and RL4 series— Phenolic handle 316 SS pull rod standard spring ■ R3A series—A. Spring Kits Spring kits include spring. To order. pull RL3. To order a valve with an optional seal material. to ensure compliance with product cleanliness requirements stated in ASTM G93 Level C. MS‑06‑63. . bonded disc. 302 SS lock wire with seal. Select a valve ordering number and a spring kit ordering number. quad seal. Function. Caution: Do not mix or interchange parts with those of other manufacturers. Swagelok—TM Swagelok Company © 2001. Swagelok proportional relief valves should never be used as code safety relief devices. For a copy. 2006. Warranty Information Swagelok products are backed by The Swagelok Limited Lifetime Warranty. 2005. 2007. trouble-free performance. 2002. proper installation. operation. adequate ratings.A. R10 MS-01-141 . visit swagelok. material compatibility. and maintenance are the responsibilities of the system designer and user. Safe Product Selection When selecting a product.S.  Swagelok proportional relief valves are not “Safety Accessories” as defined in the Pressure Equipment Directive 97/23/EC.com or contact your authorized Swagelok representative. 2004. 2003. the total system design must be considered to ensure safe.. MI October 2008. 2008 Swagelok Company Printed in U.