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Relief/Pop-Off Valves

Industrial Duty Relief & Pop-Off Valves for Reliable Secondary Pressure Relief
Relief/Pop-Off Valves

A Relief Valve, or Pop-Off Valve, is a secondary pressure regulating device used to back up the primary regulating device. If the primary regulating device fails to by-pass at a set system pressure, the relief valve will open and allow liquid to flow freely. A relief valve can save costly pump and system damage, and more importantly it’s an added safety feature to protect those working around the equipment.

Product Range:
0 to 320 GPM, 0 to 10,000 PSI

Typical Usage:
Used for single pump, multiple pumps, nozzle and gun applications.

Materials:
Available in brass, 304 and 316 stainless steel

Elastomers are available in medium nitrile buna (NBR), fluorocarbon (FPM), ethylene proplylene diene monomer (EPDM), and more.

Brass
Model Min Flow Max Flow Min Pressure Max Pressure Inlet/Discharge Ports By Pass Ports
30960 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
33960 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 3/8" NPT(M) / 3/4" Barb 3/4" Barb
33960S 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 3/8" NPT(M) / 3/4" Barb 3/4" Barb
30961 0.00 GPM / 0.00 LPM 6.00 GPM / 22.70 LPM 1000 PSI / 69 BAR 3000 PSI / 207 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
33961 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
33961S 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
33962 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 3/8" NPT(M) / 3/4" Barb 3/4" Barb
33962S 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 3/8" NPT(M) / 3/4" Barb 3/4" Barb
7190 0.00 GPM / 0.00 LPM 6.50 GPM / 25.00 LPM 400 PSI / 28 BAR 5000 PSI / 345 BAR 3/8" BSP(F) / 3/8" BSP(F) 3/8" BSP(F)
7693.100 0.00 GPM / 0.00 LPM 10.50 GPM / 40.00 LPM 230 PSI / 16 BAR 2300 PSI / 158 BAR 3/8" NPT(F) / 3/8" NPT(F) 3/8" NPT(F)
7694.100 0.00 GPM / 0.00 LPM 10.50 GPM / 40.00 LPM 400 PSI / 28 BAR 4050 PSI / 280 BAR 3/8" NPT(F) / 3/8" NPT(F) 3/8" NPT(F)
7630.100 0.00 GPM / 0.00 LPM 10.50 GPM / 40.00 LPM 400 PSI / 28 BAR 5100 PSI / 350 BAR 3/8" NPT(M) / 3/8" BSP(F) 1/2" NPT(F)
7537.100 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 230 PSI / 16 BAR 2600 PSI / 179 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
7542.100 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 800 PSI / 55 BAR 4000 PSI / 275 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
7196 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 100 PSI / 7 BAR 7250 PSI / 500 BAR 1/2" BSP(F) / 3/8" BSP(F) 3/8" BSP(F)
9940 0.00 GPM / 0.00 LPM 25.00 GPM / 95.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 3/4" NPT(M) / 1" Barb 1" Barb
7590.100 0.00 GPM / 0.00 LPM 52.00 GPM / 200.00 LPM 400 PSI / 28 BAR 2175 PSI / 150 BAR 1" NPT(F) / 1" NPT(F) 1" NPT(F)
7595 1.00 GPM / 3.80 LPM 53.00 GPM / 200.00 LPM 260 PSI / 18 BAR 2600 PSI / 180 BAR 3/4" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
316 Stainless Steel
Model Min Flow Max Flow Min Pressure Max Pressure Inlet/Discharge Ports By Pass Ports
9960 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
9960S 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
7501.100 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 100 PSI / 7 BAR 2000 PSI / 138 BAR 3/8" NPT(M) / 3/8" NPT(M) 3/8" NPT(F)
9961 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 3000 PSI / 207 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
9961S 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 3000 PSI / 207 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
9962 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
9962S 0.00 GPM / 0.00 LPM 6.00 GPM / 23.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 1/4" NPT(M) / 3/4" Barb 3/4" Barb
9920 0.00 GPM / 0.00 LPM 10.00 GPM / 76.00 LPM 0 PSI / 0 BAR 10000 PSI / 689 BAR 3/8" NPT(M) / 3/8" NPT(F) 3/8" NPT(F)
890708 0.00 GPM / 0.00 LPM 13.00 GPM / 49.00 LPM 2500 PSI / 175 BAR 10000 PSI / 689 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
7034 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 400 PSI / 28 BAR 2200 PSI / 155 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
7036 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 800 PSI / 55 BAR 4000 PSI / 275 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
7037 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 3000 PSI / 207 BAR 5700 PSI / 400 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
9941 0.00 GPM / 0.00 LPM 25.00 GPM / 95.00 LPM 1000 PSI / 69 BAR 4000 PSI / 275 BAR 3/4" NPT(M) / 1" Barb 1" Barb
890711 0.00 GPM / 0.00 LPM 50.00 GPM / 189.00 LPM 1000 PSI / 69 BAR 6000 PSI / 414 BAR 1" NPT(M) / 1" NPT(F) 1" NPT(F)
890718 10.00 GPM / 38.00 LPM 50.00 GPM / 189.00 LPM 1000 PSI / 69 BAR 8000 PSI / 550 BAR 2" NPT(M) / 2" NPT(F) 2" NPT(F)
890709 20.00 GPM / 76.00 LPM 60.00 GPM / 227.00 LPM 1500 PSI / 103 BAR 4000 PSI / 275 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
890720 20.00 GPM / 76.00 LPM 60.00 GPM / 227.00 LPM 1500 PSI / 103 BAR 4000 PSI / 275 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
890731 15.00 GPM / 56.00 LPM 75.00 GPM / 284.00 LPM 100 PSI / 7 BAR 400 PSI / 28 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
890710 0.00 GPM / 0.00 LPM 100.00 GPM / 378.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 1" NPT(M) / 1" NPT(F) 1" NPT(F)
890714 0.00 GPM / 0.00 LPM 100.00 GPM / 378.00 LPM 300 PSI / 20 BAR 1500 PSI / 103 BAR 1" NPT(M) / 1" NPT(F) 1" NPT(F)
890715 0.00 GPM / 0.00 LPM 100.00 GPM / 378.00 LPM 1000 PSI / 69 BAR 8000 PSI / 550 BAR 2" NPT(M) / 2" NPT(F) 2" NPT(F)
890712 0.00 GPM / 0.00 LPM 115.00 GPM / 435.00 LPM 500 PSI / 35 BAR 3000 PSI / 207 BAR 1" NPT(M) / 1" NPT(F) 1" NPT(F)
890703 0.00 GPM / 0.00 LPM 135.00 GPM / 511.00 LPM 400 PSI / 28 BAR 1500 PSI / 103 BAR 2" NPT(M) / 2" NPT(F) 2" NPT(F)
890700 30.00 GPM / 114.00 LPM 180.00 GPM / 680.00 LPM 1000 PSI / 70 BAR 3000 PSI / 207 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
890702 25.00 GPM / 95.00 LPM 210.00 GPM / 795.00 LPM 500 PSI / 35 BAR 2000 PSI / 138 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
890713 0.00 GPM / 0.00 LPM 210.00 GPM / 795.00 LPM 500 PSI / 35 BAR 4000 PSI / 27 BAR 2" NPT(M) / 2" NPT(F) 2" NPT(F)
890706 15.00 GPM / 57.00 LPM 260.00 GPM / 984.00 LPM 250 PSI / 17 BAR 1000 PSI / 69 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
890704 45.00 GPM / 170.00 LPM 320.00 GPM / 1211.00 LPM 500 PSI / 35 BAR 2000 PSI / 138 BAR 2" NPT(F) / 2" NPT(F) 2" NPT(M)
304 Stainless Steel
Model Min Flow Max Flow Min Pressure Max Pressure Inlet/Discharge Ports By Pass Ports
7531.100 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 400 PSI / 28 BAR 2200 PSI / 155 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
7533.100 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 800 PSI / 55 BAR 4000 PSI / 275 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)
7536.100 0.00 GPM / 0.00 LPM 21.00 GPM / 80.00 LPM 3000 PSI / 207 BAR 6000 PSI / 414 BAR 1/2" NPT(F) / 1/2" NPT(F) 1/2" NPT(F)