Steven Levy Enterprises buys and sells new, unused, and used industrial surplus relief valves. Browse our inventory of relief valves from major manufacturers such as Consolidated, Crosby, Farris and more that are available for purchase. A relief valve is a type of safety valve used to control or limit the pressure in a system. A relief valve are divided into pop-type, direct-operated, pilot-operated, and internal relief valves. The primary purpose of a pressure relief valve is for safety of system operators and property protection by venting fluid from an over pressurized vessel. Relief valves meet industry needs for overpressure protection in chemical, petrochemical, refinery, power generation and other commercial applications. Relief valves such as Consolidated relief valves, Crosby relief valves, Farris relief valves all come in various material bodies such as alloy, carbon steel, and stainless steel and may require special alloys for specific applications. Tell us what surplus relief valves you have for sale or call us at 713-910-4337.