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Pressure Relief Valves

Our pressure relief valves are designed to protect industrial piping systems and vessels from over-pressurization. These valves open when there\'s an increase from the set pressure, and close when the level drops before the set pressure.

Three functional elements of a HVAC pressure relief valve:

  • Valve element – typically a spring-loaded poppet valve
  • Sensing element – a piston or a diaphragm
  • Reference force element – usually a spring

 

When selecting a pressure relief valve, special care should be taken. We at Evergreen recommend customers browse through our stock of atmospheric pressure relief valves, straight through pressure relief valves, & female connection pressure relief valves to select the type that best serves your specific purpose.

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Pressure Relief Valves - PRV - Evergreen Midwest Co.

Showing 221-240 of 379 items

Set Descending Direction
Product SKU DESCRIPTION MANUFACTURER
1 PRV19432TP500 1/4 NPT, 500 PSI, Brass ASME Relief, PTFE, Rego
1 PRV19433F100 3/8 NPT, 100 PSI, Brass ASME Relief, Fluorosilicone Rego
1 PRV19433F125 3/8 NPT, 125 PSI, Brass ASME Relief, Fluorosilicone Rego
1 PRV19433T300 3/8 NPT, 300 PSI, Brass ASME Relief, PTFE Rego
1 PRV19433T350 3/8 NPT, 350 PSI, Brass ASME Relief, PTFE Rego
1 PRV19433T450 3/8 NPT, 450 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434F090 1/2 NPT, 90 PSI, Brass ASME Relief, Fluorosilicone Rego
1 PRV19434FP100 1/2 NPT, 100 PSI, Brass ASME Relief, Fluorosilicone with Drain Hole Rego
1 PRV19434FP120 1/2 NPT, 120 PSI, Brass ASME Relief, Fluorosilicone with Drain Hole Rego
1 PRV19434FP135 1/2 NPT, 135 PSI, Brass ASME Relief, Fluorosilicone with Drain Hole Rego
1 PRV19434T150 1/2 NPT, 150 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T250 1/2 NPT, 250 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T275 1/2 NPT, 275 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T300 1/2 NPT, 300 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T350 1/2 NPT, 350 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T450 1/2 NPT, 450 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T500 1/2 NPT, 500 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434T600 1/2 NPT, 600 PSI, Brass ASME Relief, PTFE Rego
1 PRV19434TP200 1/2 NPT, 200 PSI, Brass ASME Relief, PTFE with Drain Hole Rego
1 PRV19434TP250 1/2 NPT, 250 PSI, Brass ASME Relief, PTFE with Drain Hole Rego
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