relief valves - Circle Seal Controls

1 relief valves500 SeriesAdjustable Popoff & Inline relief to 150 psig (10 bar)How it WorksClosedResilient seal design prevents leakage. Sealing effi ciency increase with increased pressure up to cracking pressure. Metal-to-metal poppet stop supports spring load, prevents system pressure overcomes spring force, poppet opens. As pressure continues to rise, variable orifi ce between poppet and body increases, allowing greater fl seal automatically establishes line of contact with spherical seat. Seal provides zero leakage at or inline valvesAdjustable crack pressureZero leakageOptional factory presetAccurate set pressureWide range of cracking pressureTam p e r- p ro o f a djus t m e nt10 0% seat leakage testedPED certifi cations and CE marking available for most modelsApplications System overpressure protection Storage tanks Freon recovery systems Medical equipment Refrigeration & heating equipment Measuring & dispensing pumps Communications equipment Process control instruments R & D pilot plants Vacuum pump safetyTechnical DataBody Construction MaterialsAluminum, brass, 303 or 316 stainless steelO-ring MaterialsBuna N, ethylene propylene, neoprene, silicone, PTFE.

2 Or Viton Spring Materials302 stainless steel or 17-7 PH stainless steelOperating PressureVacuum to 200 psig (14 bar)Inline Valve Proof Pressure400 psig (28 bar)Inline Valve Burst PressureAbove 500 psig (34 bar)Temperature Range 320 F to +400 F ( 196 C to +204 F)Based on o-ring & body material, see How to Order Connection Sizes1 8 inch to 1 inchNote: Proper fi ltration is recommended to prevent damage to sealing Seal Controls2301 Wardlow Circle Corona, CA 92880 Phone (951) 270-6200 Fax (951) Series PTFE w/GASSLIGHT LEAKAGE1 CC/MIN. & EPRPTFE w/LIQUIDSTANDARD SEAL*RESEALPRESSURE FOR:CRACKING PRESSUREMIN. RESEAL PRESSURECRACKING PRESSURE - PSICRACKING/RESEAL PRESSURE01 2 3 4 5 6 7 8 9100123456789101112 CRACKING PRESSURE - PSICRACKING/RESEAL PRESSURE05101520253035404550051015202530 354045505560 PTFE PTFEw/GASSLIGHT LEAKAGE1 CC/MIN.

3 & EPRPTFE w/LIQUIDSTANDARD SEAL*RESEALPRESSURE FOR:CRACKING PRESSUREMIN. RESEAL PRESSUREPTFE w/AIRSTANDARD SEAL*CRACKING PRESSURE - PSICRACKING/RESEAL PRESSURE50 60708090 100 110 120 130 14030405060708090100110120130140150 RESEALPRESSURE FOR:CRACKING PRESSUREMIN. RESEAL PRESSURESILICONE & EPRPTFE w/LIQUID0 to 10 psi ( bar)10 to 50 psi ( 3 bar)50 to 140 psi (3 10 bar)* Standard seals:Buna N (559)Viton (532)Neoprene (533)Flow at Cracking PressureElastomeric seals: 5cc/minPTFE: scfmCracking Pressure Tolerance: 5%Cracking pressure on initial crack may be higher than crack-ing pressure tolerance due to inherent characteristics of seals. Cracking pressure tolerance will be greater than 5% if set pressure is 1 psi. (Consult factory)Leakage, Ascending PressureStandard seals: 0 to 95% of cracking pressureSilicon & EPR: 0 to 80% of cracking pressurePTFE:Cracking pressures up to psi: 4cc/min at 0 to 50% of cracking pressureCracking pressures psi and higher: 1cc/min at 0 to reseat pressure, 10cc/min from reseat to 90% of cracking pressuresLeakage at Reseat PressureAll elastomeric seals: ZeroPTFE: 1cc/min for cracking pressures psi and higherCircle Seal Controls relief Valves3500 SeriesAir and Hydraulic Flow Curves (500 M and MP) relief ValvesAir Flow Curves (D500 M) Popoff relief ValvesCircle Seal Controls relief Valves4500 SeriesAir Flow Rates (500 M and MP)M = Popoff valves , 1 8 3 8.

4 MP = Inline valves , Crack PressurePSIGP ercent Over Pressure Beyond Cracking(SCFM air at room temperature)10%25%50%1M/2MP2M/3MP3M/4MP1 M/2MP2M/3MP3M/4MP1M/2MP2M/3MP3 20. 52. 52. 55. 214 .924114758 . 519. = Popoff valves , 1 ; MP = Inline valves , 3 8 1 Crack PressurePSIGP ercent Over Pressure Beyond Cracking(SCFM air at room temperature)10%25%50%4M/6MP6M/8MP8M/10MP 4M/6MP6M/8MP8M/10MP4M/6MP6M/8MP8 .. 1. 5. 30. 30 2. 25. 5 60111335386 416010 0165 701517594772185111182 802021775681215123204 902626886894235138225 100303010075105250150240 1103 33 81158 01122 5 816 6 12037471328 612 5270183 130415715093150282201 1404671175102163290222 150508 019 011017530 024 0 Circle Seal Controls relief Valves5500 SeriesAir Flow Rates (D500 M)Popoff valves with defl ector cap, 1 8 3 8 Crack PressurePSIGP ercent Over Pressure Beyond Cracking(SCFM air at room temperature)10%25%50%1M2M3M1M2M3M1M2M3M.

5 24. 50. 41. 5. 21. 30. 31. 5721001676 612 . 874127338 4 1308 .1586716 . 2761424389 14 08 .6596 820781585396 1509. 06170258 01766 010 4 Popoff valves with defl ector cap, 1 Crack PressurePSIGP ercent Over Pressure Beyond Cracking(SCFM air at room temperature)10%25%50% .. 1..601. 5 3. 27. 5 . 5 1345 101. 026127226 6 42101 20185017036100 58131 25216017343112 65 30257417751128 74 403310018867158 91 504213020085195 110 60 49148225 95220 7056167251106247 80 64188278117275 90 73212308130305 10085240340145340 11089246355152347 120 93253372159355 130 98261390167363 140103270415176375 150110280440185390 Circle Seal Controls relief Valves6500 SeriesFor Your SafetyIt is solely the responsibility of the system designer and user to select products suitable for their specifi c application requirements and to ensure proper installation, operation, and maintenance of these products.

6 Material compatibility, product ratings and application details should be considered in the selection. Improper selection or use of products described herein can cause personal injury or property to OrderD 5 59 A 2 M 10 VARIATION D Defl ector capK Cryogenic service, special cleaning & testing (stainless steel only)SEAL MATERIAL & TEMPERATURE RANGE20 PTFE520 Series**: -100 F to +400 F (-73 C to +204 C)K520 Series**: -320 F to +165 F (-196 C to +74 C)24 Silicone*, -70 F to +450 F (-57 C to +232 C)32 Viton , -20 F to +400 F (-29 C to +204 C)33 Neoprene, -40 F to +300 F (-40 C to +149 C)59 Buna N, -65 F to +275 F (-54 C to +135 C)62 Ethylene propylene, -65 F to +300 F (-54 C to +149 C)80 PTFE, -320 F to +165 F (-196 C to +74 C)CRACKING PRESSURES pecify cracking pressure setting in psig( 150 psig)CONNECTIONSee Valve Size & Type Codes table, belowVALVE SIZEPipe sizes in 1 8 increments(see Valve Size & Type Codes table, below)BODY MATERIALA AluminumB BrassT 303 stainless steel T1 316 stainless steel D Variation: Prefi xed part number is supplied with a cap which diverts high pressure blasts from personnel and instruments, and serves as a rain and dust shield.

7 * Not available over psi (5 bar)** 520 Series: PTFE o-ringK520 Series: Polished PTFE o-ring, cryogenic testing and serialization580 Series: Polished PTFE o-ring Not available for PED applications Blank if not requiredTo specify PED certifi cation, add PED prefi x to the part consult your Circle Seal Controls distributor or our factory for information on special connections, operating pressures and temperature KitsIn normal service, the only part(s) which may require replacement is(are) the seal(s). A repair kit may be ordered by placing a K/ in front of the complete part number ( K/559A 2M 10).Freon is a registered trademark of is a registered trademark of DuPont Dow Size & CodesSizePipe Thread MalePipe Thread Male/FemaleBritish Pipe Thread Male/FemaleBritish Taper Pipe Male1 8 1M 1S 2M 2MP 2SX 2S3 8 3M 3MP 3SX 3S 4M 4MP 4SX 4S 6M 6MP 6SX 6S1 8M 8MP 8S1 10 M P Dimensions (Inches)Popoff LL1D DiaLL1 HexAcrossFlatsInlineHexAcrossFlatsLPipe Size, MaleLL1 HexD Dia.

8 8 8 0. 63 1. 381. 205 8 25 1. 21 861 1. 89 Pipe Size, Male & FemaleLHex 1. 62 3 8 2 . 0 87 8 2 . 3 411 8 1 1 4 . 6717 8 Circle Seal Controls relief valves