Safety Relief Valves

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Safety Relief Valves

Our high-performance safety relief valves provide dependable overpressure protection to secure critical boiler lines.

Get a Quote Order now (502) 459-9131

These safety relief valves are compatible with most OEM boilers.

  • 6021DCT01
    1/2 X 3/4 inch
  • 6021DDT01
    3/4 X 3/4 inch
  • 6021EDT01
    3/4 X 1 inch
  • 6021EET01
    1 X 1 inch
  • 6021FET01
    1 X 1-1/4 inch
  • 6021FFT01
    1-1/4"X 1-1/4 inch
  • 6021GFT01
    1-1/4 X 1-1/2 inch
  • 6021GGT01
    1-1/2 X 1-1/2 inch
  • 6021HGT01
    1-1/2 X 2 inch
  • 6021HHT01
    2 X 2 inch
  • 6021JHT01
    2 X 2-1/2 inch
  • 6021JJT01
    2-1/2 X 2-1/2 inch
  • 6010DCM01
    1/2 X 3/4 inch
  • 6010DDM01
    3/4 X 3/4 inch
  • 6010EDM01
    3/4"X 1 inch
  • 6010EEM01
    1 X 1 inch
  • 6010FEM01
    1 X 1-1/4 inch
  • 6010FFM01
    1-1/4 X 1-1/4 inch
  • 6010GFM01
    1-1/4 X 1-1/2 inch
  • 6010GGM01
    1-1/2 X 1-1/2 inch
  • 6010HGM01
    1-1/2 X 2 inch
  • 6010HHM01
    2 X 2 inch
  • 6010JHM01
    2 X 2-1/2 inch
  • 6010JJM01
    2-1/2 X 2-1/2 inch
  • 930-H
    2 X 2 inch
  • 930-J
    2-1/2 X 2-1/2 inch
  • 930-K
    3 X 3 inch
  • 537-D
    3/4 X 1 inch
  • 537-E
    1 x 1-1/4 inch
  • 537-G
    1-1/2 x 2 inch
  • 537-H
    2 X 2-1/2 inch

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In-stock items. Order by 3:00 PM EST for Same-Day Shipping.

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Frequently Asked Questions About Safety Relief Valves

A safety relief valve is perhaps the most important safety component on any boiler. It is designed to act as a fail-safe device that automatically relieves pressure if the boiler’s internal pressure exceeds its maximum allowable working pressure (MAWP). If a malfunction occurs—such as a failed pressure control or a runaway heating condition—the valve opens to discharge steam or water, preventing a catastrophic boiler explosion. These valves are strictly regulated by safety codes like the ASME Boiler and Pressure Vessel Code, which requires them to be properly sized and installed to ensure they can discharge the maximum amount of steam or water the boiler is capable of producing.

Safety relief valves should be tested periodically, typically following the manufacturer’s recommendations and local jurisdictional requirements, to ensure the internal spring and disc mechanism has not seized due to corrosion, scale, or mineral deposits. Signs that a valve is failing or has already failed include persistent “weeping” or leaking from the valve discharge pipe, a valve that fails to open during testing, or a valve that leaks steam even when the system pressure is well below its set point. If you observe any leakage or suspect the valve is stuck, it must be replaced immediately; a compromised safety valve poses a severe risk to life and property, and it should never be repaired or adjusted by unqualified personnel.

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