Number
A pressure relief valve that has its closing force provided by a spring.
A pressure relief valve that uses a pilot valve to indirectly activate the main valve.
A pressure relief valve that is intended to release excess pressure or admit pressure to prevent a vacuum forming when filling or emptying a pipeline or tank.
A self operating valve that is set to open at a certain pressure level to prevent the pressure in a container or system from reaching unsafe levels.
A relief valve that is used for pressure compensation purposes by admitting (letting in) a pressure to prevent that vacuum is forming when filling or emptying a system.