Medium for liquid ammonia pneumatic valve materials choose 3)

the safety of the ammonia use pneumatic valve, in fact, ammonia can be used to study the characteristics of pneumatic valves, liquid ammonia and ammonia water, wet ammonia and water for copper corrosion, form a green cuprammonium complex. Therefore, we need to solve the seal problem! No seal of copper and copper alloy
normally, pneumatic valve, pneumatic valve seal welding bobby. Under normal circumstances will not be compromised. Pure liquid ammonia corrosion is very small, pneumatic valve leakage is caused by corrosion,
should be pneumatic valve, pneumatic valve seat low hardness and strength, erosion, or particle ge mark, indentation, and other factors, because of security pneumatic valve, after all is the use of discontinuous, even at low temperatures, - , I personally think that the carbon steel ( Cast steel) Material can be met,
, pneumatic valve, pneumatic valve seat sealing surface processing technology, heat treatment is the key
, stainless steel scrap, not material, the higher the better, sealing surface processing technology, heat treatment is not good, not good materials, but stainless steel is can not!
, suggest not to use small factory, and cheap, when ordering must indicate as medium pneumatic valves for the liquid ammonia, manufacturers will form a complete set of inner part of the pneumatic valve for you.
there is no pure liquid ammonia corrosion, but once water (slightly Steam) To enter, it will strengthen the corrosive, suddenly will soon can pneumatic valve core and pneumatic seat hardening layer peeling off.