Tee pneumatic valve closed lax caused the problem of how to?

Electric 3-way solenoid when use, there may be some problems, some netizens say that there will be a closed lax, so, detailed analyze the tee pneumatic valve clearance for everybody today is lax reason and the solution of the problem.

1, pneumatic valve stem thread rust, for normally open electric 3-way solenoid pneumatic valve, accidentally closed, the pneumatic valve stem thread has rust, loose off will occur. For this case, can switch over and over again a few times electric pneumatic valve, at the same time with a small hammer knock at the bottom of the pneumatic valve body, the electric pneumatic valve can be locked, don't need to make grinding electropneumatic valve repair.

2, tee pneumatic valve sealing surface was damaged, tried for many times switch doesn't close tightly, the sealing surface has been damaged, should repair service; Or corrosion, medium grain drawing, such as damage the sealing surface, also should repair service.

3, have stuck electropneumatic valve sealing surface impurities, pneumatic valve suddenly closed lax, sometimes may be a impurity stuck between the electric pneumatic valve sealing surface and not applied force forcibly closed at this time, should the electric pneumatic valve is slightly larger, and then he tried to shut down, try again and again, generally can be ruled out, otherwise should be checked, should maintain a medium quality and clean.

4, pneumatic valve stem and valve connection is bad, often give the 3-way solenoid pneumatic valve stem and pneumatic stem nut to add lubricating oil, to ensure the switch of electric pneumatic valve flexible, want to have a regular maintenance program.