Guangdong Huaping Hygiene Material Industrial Co.,Ltd. main products include waterproof breathable membrane,PE breathable film,PE perforated film,Multicolor printed film,Nonwoven Laminated film,Anti-counterfeiting Holographic film etc .Manufacturers of waterproof and breathable membranes introduce the main causes of failure of waterproof and breathable valves:
Valve body: Always check the corrosion and wear of the inner wall of the valve, especially for valves used in harsh process conditions such as corrosive media, high pressure differences, and cavitation. It must ensure its compressive strength, corrosion resistance, and grinding performance.
Valve core: Because the waterproof and breathable valve core plays the role of regulating and cutting off the fluid, it is an active intercepting element, so it is most severely affected by the erosion, corrosion, and particle collision of the medium. The case is more vulnerable to damage, so check its parts for damage, wear, corrosion, and whether they need to be repaired or replaced.
Valve seat: The joint surface of the valve seat is the key to ensure the valve is closed, and it is also severely corroded and worn. Moreover, because the waterproof and breathable valve will have medium penetration, the threaded inner surface of the fixed valve seat is often corroded and loosened, so this part should be specially checked.
Valve stem: Check whether the connection between the waterproof and breathable valve stem, the valve core and the push rod is loose, and whether there is excessive deformation, cracks and corrosion.
Gaskets and O-rings: These vulnerable parts cannot be damaged or aged.
Packing: check whether the PTFE or other packing is aging, lack of oil, deterioration, whether the packing is tight
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