Negative pressure method detection device for tightness of diaphragm gas meter valve body

The present invention relates to a negative-pressure diaphragm gas meter valve sealing means assay. Existing devices require staff rely on experience, in addition to detecting slow, low detection accuracy and good reliability. In the present invention is mounted on the table at the base, the base fixed to the lower base, and the base station is detected screwed; base hollow interior, forming a first cavity, a hollow interior inspection station, a second cavity is formed, through the first cavity and the second cavity. It is provided with a pressure sensor and a high speed rotary quick-connector in the lower base. On the surface of the inspection station has a pressure groove open, pressure equalization groove Unicom stage by detecting the upper surface of the second cavity and the orifice, the orifice centrosymmetric are distributed over the pressure groove. The present invention, detection speed, high precision, reliability, rapid detection of suitable staff tightness of the valve body in the workshop.