Pilot operated pressure relief valves use process pressure, instead of a spring or weight, to keep its primary seat disc closed at pressures below set.

With the broadest range of pilot operated pressure relief valves, Emerson is able to solve the most demanding pressure protection challenges, providing reliable protection at low operating costs.
With pop or modulating action, from cryogenics to high temperatures, designed, certified and tested in accordance to most codes and standards around the world. Our pilot operated pressure relief valves are available in many materials and configurations to suit all applications, including dirty
fluids, while reducing weight, enabling in-line checking and maintenance for lower cost of ownership. The configurations and options available provide the perfect match for any application that requires highly reliable protection and flexibility.

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