Run in the pneumatic valve maintenance

running pneumatic valve, pneumatic valve pieces should be complete, intact. Flange and bolt on the stent are indispensable, thread should be intact and are not allowed to have loose phenomenon. Loose fastening nut on the wheel, such as found should be tight in time, in order to avoid wear joint or missing the handwheel and nameplate. Wheel if you are lost, do not allow the use of a wrench, should be complete in a timely manner. Packing gland are not allowed to skew or no preloaded gap. For vulnerable to snow and rain, dust, sand and dirt from the environment of pneumatic valves, the pneumatic valve stem to install the shield. Pneumatic valve rod should maintain complete, accurate and clear. Pneumatic valve seal, blocks, such as pneumatic accessories shall be complete in good condition. Heat preservation jacket should have no sag, crack. Don't allow tapping, standing on the operation of pneumatic valve or bearing weight; Especially non-metal pneumatic valves and pneumatic valve, cast iron is prohibited.