Description

Check valve The check valve of the valve group adopts the upstream pressure balance valve, which can ensure that the pressure load measured by positive pressure and negative pressure is consistent Prevent the instrument from unilateral overvoltage during startup and operation. In addition, the check valve allows the instrument to operate Zero point detection is realized in the process. three-way valve The three-way valve is also attached with an additional stop valve, which can isolate the process pipe without affecting the normal production line Line, so as to realize the disassembly, testing and shutdown of the instrument. The three-way valve can not only prevent damage in the pipeline The pressure is overloaded, and the static pressure measurement can be realized after the differential pressure gauge is removed. Four way and five way valves The two manifolds are pressure manifolds with integrated stop valves and purge and vent valves, which are not only used for Emptying the pressure on one or both sides of the pressure gauge can also be used to clean the gas supply pipeline.