Pneumatic valve repair methods

To pneumatic valve in the process of using stable performance and long operating time, regular maintenance and maintenance is necessary. In the process of valve repair, pay attention to the factor has the following several aspects: first, before using, application of water to clean pipe and valve body flow section, to prevent the residual iron filings and other debris into the valve body cavity. Two, pneumatic valve in the closed state, the body still remain part of the media, are also under certain pressure. Before repair valve, cut-off valve to close the pneumatic valve, open the need to overhaul the pneumatic valve, complete internal pressure release valve body. If the electric pneumatic valve, pneumatic valve or pneumatic should first disconnect the power supply and air supply. Three or four fluorine soft sealing pneumatic valve are commonly use ( PTFE) As the sealing material, hard seal pneumatic valve sealing surface surfacing welding of metals. If you need to clean pipe pneumatic valve, need to be careful to prevent damaged during disassembly leak sealing ring. Four to tear open outfit, pneumatic valve, flange bolt and nut should be fixed on the flange, then all nut is a bit tight, the last hard fixed well. As to individual nut to fixed good, then other nut, flange surface between pad surface caused by uneven in the damaged or broken, lead to leak valve flange butt out of the media. Fifth, to repair the valve, to valve and clean, you should use a solvent and to clean the parts do not conflict, no corrosion. If it is gas special pneumatic valve, gas cleaning are available. Other parts generally clean with water can be. When cleaning, thoroughly clean traces of dirt, grease and other attached objects, such as cannot be cleaned with water, but without causing damage to the valve body and component under the premise of targeted detergent for cleaning with alcohol, etc. After the completion of the cleaning detergent such as volatilization completely before assembly. Six, if in use process of filler has a small leak, can be a little to stem nut, stop can be close to leak, do not continue to tighten. Seven, in open air for a long time, can lead to the valve body and component rust, can't normal use. Pneumatic valve deposit should be rain, waterproof, moistureproof, and flange cover tightly. Stored for more than a month of the valve, when using, should be test again, in order to ensure stable performance.