The performance characteristics of pneumatic valves at low temperature

and low temperature air valve pneumatic valve cover design for the structure of long neck, can isolate the low temperature medium influence on packing, pneumatic valve opening and closing flexible;
, filler adopts flexible graphite or ptfe composite structure, has good low temperature resistance;
, the gasket is made of stainless steel wallet ptfe or flexible graphite spiral wound gasket structure;
and pneumatic valve in the closed, to prevent the pneumatic valve cavity medium at low temperature for temperature rise, produce gasification abnormal pressure, on the high side gate or pneumatic valve body is equipped with pressure relief structure;
, pneumatic valve sealing surface surfacing welding cobalt cemented carbide, tungsten carbide small deformation under low temperature, wear resistance, can keep the good sealing performance.