Electric valve to maintain normal electric valve protection protection 1 should be save dry ventilated room, electric valve, pathways, both ends must be blocked. 2, check the electric valve should be check regularly for long, remove dirt, and rust-proof oil coating on the surface of the processing. After 3, installation, should check regularly, first to check the project: ( 1) Sealing surface wear condition. ( 2) The stem and stem nut trapezoidal thread wear condition. ( 3) Packing can be expired, if any damage should be timely replacement. ( 4) After repair of electric valve device, should be sealed function experiment. Operation of the electric valve, all kinds of valves shall be fully and shape. Flange and bolt on the stent can't short, thread should perfect condition, there is no loose surface. Hand wheel fastening nut, such as found loose should tighten in time, avoid wear cohesion or lose the handwheel and nameplate. The handwheel if you have lost, do not allow the use of a wrench to replace, should be complete in a timely manner. Packing gland are not allowed to tilt or no preloaded gap. For simple by snow and rain, dust, sand and dirt infected environment of electric valve, the valve stem to device shielding. Electric valve rod should adhere to the perfect, accurate and clear. Electric valve seal, blocked shots, pneumatic accessories and so on should be completely. Heat preservation jacket should have no sub-sag, crack. Do not allow the person struck, standing on the operation of the electric Industrial Valves or bearing weight; Especially non-metal electric valves and cast iron valves, stop.
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