F500X holding pressure relief valve

　　F500X pressure holding pressure relief valve from the main valve, pilot valve, needle valve, ball valve and pressure gauge. Pressure relief / holding pressure valve on the pipeline can effectively set the pressure relief valve to set the value of the pressure relief valve to prevent the pipeline and equipment due to overpressure and damage. The valve is mainly used in the high-rise building fire test of the circulation system of the pressure relief, to prevent the high pressure caused by the system failure.

F500X pressure relief valve principle is:

　　When the pressure in the pipeline is greater than the pressure relief valve set pressure, the oil will be discharged pressure relief valve, thereby controlling the pressure in the pipeline will not exceed a certain limit. Needle type pressure relief valve, is by the length of the spring force the valve has been adjusted to adjust the pressing force, when the pipeline pressure is higher than the set value, the spring is opposite compression, thus sealed thimble open, leakage of oil outflow, to protect the equipment, pressure regulating system function.

　　The pressure relief valve from the main valve, pressure relief / holding pressure pilot valve needle valve, ball valve, micro shaped filter and control over system hydraulic pressure gauge. The use of hydraulic automatic operation, that can be used for pressure relief valve and can be used for holding pressure valve. As a pressure relief valve, can maintain the pressure in the setting of the water pressure in the setting of the pressure valve to maintain the upstream water pressure on the main valve to maintain the upstream water supply pressure.