AC 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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ImageProduct TitleBrandSkuPrice
Female Connection Pressure Relief Valve, 3/4 NPT x 3/4 FPT, 425 PSI, Discharge Capacity: 65.1
$274.46
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Female Connection Pressure Relief Valve, 3/4 NPT x 3/4 FPT, 450 PSI, Discharge Capacity: 68.8
$274.46
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Female Connection Pressure Relief Valve, 1 NPT x 1 FPT, 235 PSI, Discharge Capacity: 88.0
$337.03
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Female Connection Pressure Relief Valve, 1 NPT x 1 FPT, 300 PSI, Discharge Capacity: 111.0
$322.52
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Female Connection Pressure Relief Valve, 1 1/4 NPT x 1 1/4 FPT, 235 PSI, Discharge Capacity: 111.0
$575.16
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Female Connection Pressure Relief Valve, 1 1/4 NPT x 1 1/4 FPT, 300 PSI, Discharge Capacity: 111.0
$575.16
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Angled Pressure Relief Valves, 1/4 NPT x 3/8 SAE, 235 PSI, Discharge Capacity 8.1
$147.61
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Angled Pressure Relief Valves, 1/4 NPT x 3/8 SAE, 300 PSI, Discharge Capacity 10.2
$147.61
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Angled Pressure Relief Valves, 1/4 NPT x 3/8 SAE, 450 PSI, Discharge Capacity 15.1
$147.61
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Angled Pressure Relief Valves, 1/4 NPT x 3/8 SAE, 650 PSI, Discharge Capacity 21.6
$356.06
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