Pilot operated safety valve

Product features

Pilot operated safety valve is a type of non direct load safety valve. When the turning force of the medium reaches the opening pressure of the pilot valve, the pilot valve opens first, and the discharged medium enters the main valve through the bypass pipe.

technical parameter

Product Usage

It is a novel structural safety valve. Mainly used in the fields of petroleum, weather, chemical, electricity, metallurgy, and urban gas, it is an excellent overpressure protection device on pressure equipment containers or pipelines. The main advantage of a pilot operated safety valve is that it changes the direct action of the spring to the indirect action of the pilot valve, which improves the sensitivity of the action. The main valve adopts a sleeve piston type, double sealed valve seat structure, high accuracy and repeatability of action, fast reseating, no leakage, and high back pressure discharge. The working life is long, stable and reliable. The 46F/Y pilot operated pressure relief safety valve can also be adjusted online, and after repeated opening and discharging, it can still automatically reseat and close strictly, Easy to operate and maintain.

Product features: The soft sealing of the valve seat ensures good sealing before and after the safety valve starts, allowing the working pressure to be close to the set pressure of the safety valve. When the overpressure is small, the main valve can quickly reach the fully open state. The safety valve action performance and opening height are not affected by back pressure. The opening and closing pressure difference can be adjusted to prevent the flow of the pilot valve. The design of the non flowing structure reduces the discharge of harmful media and environmental pollution. The set pressure of the safety valve can be detected online.

Execution standards

design code

GB/T 12243

Structural length

GB/T 12221

Testing and Inspection

GB/T 12242

Product identification

GB/T 12220

Supply specifications

JB/T 7928