The overflow valve provides safety protection in the system.When the system pressure exceeds the specified value, the safety valve will be opened and part of the gas in the factory system of yuyao capsule accumulator will be discharged into the atmosphere. The system pressure will not exceed the allowable value, which ensures that the system will not have an accident due to high pressure.The main parameter of overflow valve is displacement, the displacement is determined by the caliber of the seat and the open height of the disc, according to the open height and different, divided into micro and full open type two.

The so-called micro-open type means that the opening height of the disc is 1/40 ~ 1/20 of the throat diameter of the seat.The so-called full open type, it is to point to the leaf open height for the valve seat throat diameter of 1/4 valve spring type and lever type 2.

In addition, there are pulse relief valve, pilot safety valve, safety switch valve, safety expansion valve, static vane type relief valve.Spring type safety valve basically depends on the acting force of spring to work, spring type safety valve has seal and not seal, general flammable, explosive or poisonous medium can choose airtight type, steam or inert gas, also can not be airtight type.Spring type overflow valve has wrench and wrench.The main purpose of the wrench is to check the flexibility of the flaps and in some cases can be used for manual emergency pressure relief.

The lever type safety valve mainly relies on the force of the heavy hammer of the lever to carry out the action.If the temperature is higher, select a relief valve with a radiator.