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In the pneumatic ball valve, leakage is a common problem, pneumatic ball valve leak was the cause of it, small pneumatic ball valve series are summarized as follows:
① the right and left the body of the valve body leakage. Sealing surface of the trimming to eliminate dirt, replace the gasket evenly interspersed, and tighten the nut.
② packing leakage. Tighten the gland bolt or replace filling (top packed 1, packed in 2, packed under 1). When the device should not be cutting edge, evenly tighten the gland bolt.
③ stem is not sensitive. Loose gland adjustment bolt, mercy evenly adjusted loose connection nut or thicker gaskets to reduce preload, careful not to leak.
Black-seal leakage. Uniform, interspersed with nut tightened around convergence, increasing preload, or adjust the seal, gasket and clean the seal groove.
⑤ tighten the ball valves are not bait to help leverage or something else hard to pull of in wrench, this stem is damaged. Such as Chinese effort to analyse the reasons, valve closed heat swell to form open hard cap bolt loosening can be at the moment, to eliminate stress and then open the valve stem, packing too tight, it may be appropriate to relax fill.
F ball valve can only be fully open or fully closed, usually used for conditioning and throttle are not allowed. The ball valve using a wrench, wrench and channel parallel to fully open, turn 90 ° when fully closed.
⑦ seal leakage. Uniform, interspersed with nut tightened around convergence, increasing preload, or Exchange seals, gaskets and clean the seal groove.
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