Pneumatic control valve manufacturer teach you pneumatic - valve fault how to solve

Pneumatic control valve in the control system of an important regulating function, pneumatic control valve hair often stuck or congestion causes regulating system can not run normally, directly affect the benefit of the factory, so as soon as possible to solve the fault is very important, what method? A, cleaning pipeline welding slag, rust, pulp are under the throttle mouth, guiding parts, valve cover balance hole blockage or stuck valve core surface, guide surface strain and scratches, seal surface indentation, etc. This often happens in the early new operation system and put into operation after overhaul. This is a common fault. In this situation, you must remove for cleaning, remove the slag content, such as the sealing surface damage should also grinding; At the same time open the bottom plug to flush out from under the balance hole fall into the residue inside the valve cover, and the pipeline to wash. Before put into operation, let the pneumatic control valve fully open, the medium flows into normal operation again after a period of time. Second, external flushing method for some easy to precipitate, medium containing solid particles using ordinary valve adjustment, often at the throttle mouth, guide block, but the cover bottom plug in an external erosion gas and steam. When the valve is blocked or jammed, open an external gas or steam valve, can be completed in under the condition of fixed pneumatic - valve flushing work, make the normal operation of valve. Three, install pneumatic control valve of small diameter pipeline filter method, especially ultra-small flow pneumatic control valve, the throttling clearance, small, medium can't have a little residue. Encounter this jam, installation of a strainer before valve line, to ensure that the media to go through. Locator using pneumatic control valve, locator is not normal work, the pneumatic throttle mouth jam is a common fault. Accordingly, when working with locator, must deal with gas source, usually adopts the way is in front of the locator air pipe installed on the air filtering pressure reducing valve. Four solid particles, increase the throttle gap method such as the medium or washed off in pipe welding slag and rust due to pass the throttle mouth such as jam, jam, such as fault, can convert the throttle gap bigger throttle piece - 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 valve core form to 'V' shape of valve core, or into a sleeve valve, etc. Such as a chemical plant has a two-seat valves often gets stuck, recommend to switch to the sleeve valve, problem be solved immediately. 5, medium washed law USES the scouring of medium energy, wash and take things easy to precipitate, easy to jam, thus improve the function of valve stem. Puts the throttling mouth wash badly, adopted should pay attention to improve the throttling parts material erosion resistant ability. Six, leading to the Angle through to pour S flow, flow complex, upper and lower chamber should dead zone, provides the medium of precipitation. Angle connection, flows through 90 ℃ medium like elbow, washing performance is good, dead zone is small, easy, designed to streamline. Therefore, using the pass-through of pneumatic control valve produces mild jams can be used to Angle valve.