Caused by cavitation corrosion electric pneumatic control valve leakage

Caused by cavitation corrosion electric pneumatic control valve leakage error caused by the valve selection of cavitation corrosion of electric pneumatic - valve leakage caused by cavitation and pressure difference, when the actual pressure differential valve delta P is greater than produce cavitation critical pressure differential delta Pc, will produce cavitation, in the process of cavitation bubbles burst release enormous energy, the valve seat, valve core has great damage, the throttling components such as general valve under the condition of cavitation run no more than three months, or even shorter time, the valves are subjected to severe cavitation corrosion, the high seat leakage can reach more than 30% of the rated flow, this is irreparable, therefore, different USES electric door has different specific technical requirements, according to system process to choose reasonable electric pneumatic regulator is of crucial importance. Solution: process improvement, choose multi-stage decompression or pneumatic control valve socket. Increase pneumatic - valve throttle clearance method such as solid particles in the medium or washed off in pipe welding slag and rust due to pass the throttle mouth such as congestion, jam, such as fault, can convert the throttle gap big throttling parts & ndash; Throttling area of a window, open the valve core and the sleeve, rather than the circumference of a circle because of the throttling area of concentration distribution, fault can easily be ruled out. If you are single, two-seat valves can change the plunger type valve core to V mouth valve core, or into a sleeve valve, etc. Such as have a pneumatic control valve in a chemical plant often stuck, recommend to switch to the sleeve valve, problem be solved immediately.