Cat® Relief Valve is a type of safety valve used to control or limit the pressure build-up by releasing fluid when the safety threshold has been reached, otherwise pressure might build up and create a failure, or fire. Cat® relief valve is designed or set to open at a predetermined set pressure to protect pressure vessels. Cat® Valves are manufactured to precise specifications and are built for durability, reliability, productivity.Application:Consult your owner's manual or contact your local Cat® Dealer for more information.