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Pressure Relief Valves

 The 50 Series Pressure Relief Valve is designed to maintain constant upstream pressure within close limits. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges. In addition to surge relief, this valve can be used for pressure relief, pressure sustaining, back pressure, or unloading functions in a by-pass system.

There are many variations on the basic pressure relief valve, including but not limited to the following.

  • 50-01KO Pressure Relief with KO Anti-Cavitation Trim
  • 50-33 Excessive Pressure Safety Shut-Off
  • 52 Series Pressure Relief ands Surge Anticipator
  • 550 Series Pressure Relief, Pressure Sustaining
  • 58-01 Combination Back Pressure and Solenoid Shut-Off
  • 350 Series Electronic Pressure Relief

Check out Cla-Val’s line of Pressure Relief Pilot Controls: CRL and 55F.

  Product Name  Model #   
50-01/650-01 Pressure Relief, Pressure Sustaining Valve
50-01/650-01 Pressure Relief, Pressure Sustaining Valve
50-01/650-01
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50-01KO Anti-Cavitation Pressure Relief, Pressure Sustaining Valve
50-01KO Anti-Cavitation Pressure Relief, Pressure Sustaining Valve
50-01KO
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50-90 Pressure Sustaining Valve
50-90 Pressure Sustaining Valve
50-90
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CRL and 55F Pressure Relief Valve
CRL and 55F Pressure Relief Valve
CRL and 55F
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50-33/650-33 Pressure Relief Valves
50-33/650-33 Pressure Relief Valves
50-33/650-33
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52-01/652-01 Pressure Relief & Surge Anticipator Valve
52-01/652-01 Pressure Relief & Surge Anticipator Valve
52-01/652-01
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52-03/652-03 Pressure Relief and Surge Anticipator Valve
52-03/652-03 Pressure Relief and Surge Anticipator Valve
52-03/652-03
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250-01/605-01 Differential Pressure Relief Valve
250-01/605-01 Differential Pressure Relief Valve
250-01/605-01
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58-01/658-01 Combination Back Pressure and Solenoid Shut-Off Valve
58-01/658-01 Combination Back Pressure and Solenoid Shut-Off Valve
58-01/658-01
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550-01/6550-01 Pressure Relief, Pressure Sustaining Valve
550-01/6550-01 Pressure Relief, Pressure Sustaining Valve
550-01/6550-01
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