Brief analytical wet alarm pneumatic valve material corrosion resistance

( Wet alarm pneumatic valve pneumatic valve body and valve cover shall be made by the corrosion resistance of not less than cast iron material. Pneumatic valve seat should be made by the corrosion resistance of not less than bronze material.
( Wet alarm pneumatic valve requires rotating or sliding parts should be bronze, brass, austenitic stainless steel corrosion resistant materials such as wet alarm pneumatic valve. If the performance is lower than the above requirement for corrosion resistance of materials, should be in place, where there is relative motion to join the line suite of corrosion resistant materials.
( Delayer set filter, made by the corrosion resistance of not less than the brass material.
( The corrosion resistance of hydraulic alarm bell nozzle and filter should be used is not lower than brass materials.