Pressure Relief Valves

Pressure relief valves are compact devices which mitigate risk associated with overpressure in pressure vessels and boilers. It safeguards the pressure vessel, surrounding assets, and workers from probable spillages and even bursts which may happen due to exceeding of the pressure beyond the designed upper limit.

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  • Advantage Controls Pressure Relief/Discharge Valve Advantage Controls Pressure Relief/Discharge Valve

    Advantage Controls

    Advantage Controls Pressure Relief/Discharge Valve

    $62.00 - $77.00
    Application: Advantage Controls manufactures a quality line of metering pumps and we recognize that replacement parts don’t need to cost as much as the pump.Most brands of chemical metering pumps use standard size flexible tubing for suction and...
    $62.00 - $77.00

  • Pressure Relief Valve for all Biocide feeders

    Vector Industries

    Pressure Relief Valve for all Biocide feeders

    This thermoplastic-diaphragm pressure relief valve is the perfect insurance policy that protects your biocide feeder from over pressurizing. If for any reason pressure starts to build up in your biocide feeder, the diaphragm is forced up to relieve any...

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These valves open at a pre-programmed or set level of pressure, and hence the excess pressure is released from the system. We offer boiler pressure relief valves, automating reseating valves, spring loaded valves, and more. These are made from superior quality materials that can withstand abrasive fluids.

How Does a Pressure Relief Valve Work?

Commonly used in hydraulic, pneumatic, and digital systems across industries, these valves are preset to a certain pressure value, and they open if the value exceeds. This helps maintain upstream as well as downstream pressures from affecting the valve.

It also helps reduce pressure peaks as well as pulses which helps protect the equipment and the overall system. This type of valve primarily comprises a ball or diaphragm and a nozzle. The actual operating mechanism may be automated or spring loaded depending on the type of relief valve. In case of automatic valves, there is a thermostat as well as NPT outlet connections. They offer automatic pressure and temperature control and have an automatic reseating feature. In case of spring loaded valves, it opens when the pressure crosses threshold value, and the excess pressure or fluid is released.

Beneficial Features of High Pressure Relief Valves

There are many benefits of high pressure relief valves and especially when you source them from us. Here are some of them.

  • They are primarily designed for safeguarding industrial process systems, equipment, and workers.
  • We offer these valves with varied pressure and temperature ranges which can be customized to suit your specifications.
  • These valves are made or sturdy metals or alloys such as stainless steel, bronze, and so on, and are designed to operate in harsh industrial environments.
  • They can operate either as a standalone device for a particular process or can be integrated with automated industrial systems.
  • When sourcing these valves from us, you can be absolutely sure about the quality, compatibility, and aftersales support such as maintenance.

High Pressure Relief Valve Applications

Here are some application areas of high pressure relief valves:

  • Wastewater treatment
  • Food & beverages
  • Chemicals
  • Pharmaceutical
  • Agriculture
  • Environmental
  • Oil & gas

If you are looking for good quality pressure relief valves for your industrial system, we are absolutely reliable partners. At Cannon Water Technology, we offer a huge collection of water pressure relief valves in various types and configurations. While we have our own products, we also source these valves from reputed manufacturers and hence you can be rest assured about our quality. You can share your requirements with us and we can offer you a quick quote. In case of any further enquiries or questions you may have about our valves, you can reach us via phone or email.


Does weather and temperature affect water pressure relief valve performance?

Yes, weather and temperature can affect the performance of water pressure relief valves, potentially leading to valve failure or improper operation.

What information do I need to size and select a water pressure relief valve?

To size and select a water pressure relief valve, you will need to gather the following information:

  • Maximum allowable working pressure (MAWP)
  • Inlet pressure
  • Outlet pressure
  • Flow rate
  • Pipe size
  • Temperature
  • Application

How often should I test and inspect my water pressure relief valve?

It is recommended to test and inspect water pressure relief valves on a regular basis, typically once a year or more frequently if required by local codes or regulations. The frequency of testing and inspection may also depend on factors such as the valve's age, operating conditions, and the criticality of the system it is installed in.

How does a water pressure relief valve work?

A water pressure relief valve works by sensing the pressure of the water supply system and opening to release excess pressure when it exceeds a set limit. The valve is typically set to open at a pressure slightly above the normal operating pressure of the system, and is designed to maintain a consistent outlet pressure even as the inlet pressure fluctuates.