What are the main causes of the failure of the waterproof breathable valve?

1. Valve body: Always check the corrosion and wear of the inner wall of the valve body, especially for valves used in corrosive media, high pressure difference, cavitation and other harsh process conditions, it is necessary to ensure their compressive strength, corrosion resistance and resistance. grinding performance.

2. Valve core: Because the waterproof and breathable valve core plays the role of regulating and cutting off the fluid, it is an active shut-off element, so it is seriously affected by the erosion, corrosion and particle collision of the medium. It is more vulnerable to damage, so check its parts for damage, wear, corrosion, and whether it needs to be repaired or replaced.

3. Valve seat: The valve seat joint surface is the key to ensuring that the valve is closed, and it is also seriously corroded and worn. Moreover, due to the penetration of the medium in the waterproof and breathable valve, the inner surface of the thread of the fixed valve seat is often corroded and loosened, so this part should be specially checked.

4. 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.

5. Gaskets and O-rings: These vulnerable parts cannot be cracked or aged.

6. Packing: check whether the PTFE or other packings are aging, lack of oil, deteriorate, and whether the packing is tight