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Relief Valve Manufacturers and Suppliers

IQS Directory provides a detailed list of relief valve manufacturers and suppliers. Find relief valve companies that can design, engineer, and manufacture relief valves to your specifications. Peruse our website to review and discover top relief valve manufacturers with roll over ads and complete product descriptions. Connect with the relief valve companies through our hassle-free and efficient request for quote form. You are provided company profiles, website links, locations, phone numbers, product videos, and product information. Read reviews and stay informed with product new articles. Whether you are looking for manufacturers of pressure relief valve tankless water heater, fuel pressure relief valve, steam boiler relief valves of every type, IQS is the premier source for you.

  • W. Des Moines, IA 515-224-2301

    Our check valves are manufactured with the customer in mind. We believe in offering superior products and services every time. No matter whether you are looking for small or large valves, we can meet your every needs. It is our goal to offer excellent prices and service to each customer. Contact us to learn more today!

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  • Fenton, MO 800-233-1477

    Our team at Control Devices believes that all of our customers should receive products that exceed their expecations. That’s why we design and produce our check valves using the highest quality materials. We will work with each customer to help find a lasting solution. Our company is ISO 9001:2015 certified. Contact Control Devices today to learn more!

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  • Maplewood, MN 651-330-3437

    When it comes to ball valves, you can count on Valve Check to manufacture ball valves and relief valves! Our valves can operate up to 10,000 PSI, and can be made from such materials as brass, aluminum, steel and stainless steel. Many standards and configurations available! For more information, call us today! We look forward to working with you!

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  • Exeter, CA 800-331-0808

    We have been offering irrigation solutions since 1912. Waterman serves the wastewater industry by manufacturing control gates, butterfly valves, stainless steel butterfly valves, 3" - 12" round butterfly valves, 4" - 12" wafer butterfly valves and other irrigation equipment. For more information, contact GNI Waterman and a representative will be happy to assist you.

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  • Butler, NJ 973-838-6500

    Manufacturing standard or custom check valves, pressure relief valves, needle valves, control valves, pressure regulators and instrument-quality tube fittings plus other flow and pressure control products is our business. Generant is ISO 9001:2000 certified. We have been in business for 75+ years.

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businessIndustry Information

Relief Valves

A relief valve is a type of valve used to control or limit the pressure in a system. Also known as pressure relief valves (PRV), pressure safety valves (PSV) and safety valves, these systems act as a safety measure. They relieve excess pressure from equipment failure, process upset, or fire by opening an auxiliary passage to divert the fluid (liquid, gas, steam or air) away from the pressure vessel. Once the pressure in the vessel is released and the danger is over the relief valve closes itself.

Emergency situations are not the only times relief valves are active; once installed they continuously regulate the flow of substance. They can also be pre-set to open when the pressure or temperature gets to a certain point that may be dangerous. Generally valves are placed on or near the pump head of the hose, pipe or tube. A wide variety of relief valve designs exist, although most resemble ball-check valves, swing check valves or diaphragm valves. This last is particularly useful when controlling a flow of fluids that contains suspended solids. Most relief valves are spring operated, as are the majority of check valves. One specialized type of relief valve is known as a vacuum relief valve. As opposed to a normal relief valve, which relieves high pressure, a vacuum relief valve is used to relieve dangerously low pressures, or vacuums, by inserting air or an inert gas.


Like every other type of check valve, relief valves may be constructed from a variety of materials, including PVC, brass, ductile iron, copper, polyethylene, polypropylene, aluminum, steel, stainless steel and rubber. Which raw substance is used to produce each relief valve depends on the environment said relief valve will be in. The wrong product could result in erosion or contamination of the process stream. However, as long as research is done, finding the appropriate type of relief valve is possible. Every plumbing or fluid transfer application in the industrial, commercial and domestic arenas employ or will employ check valves. In fact, check valves of all kinds are an essential part of every day life.  Because they need not be supervised to function and prevent product malfunction, check valves are not only desirable but often required by law to ensure the safety of water, gas and pressure applications.

 

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Relief Valves Informational Video