Running of electric valve should complete valve parts in good condition, does not allow for the running of electric valves to knock and bearing the weight, especially for non-metallic electric valves and cast iron electric valves, etc. , and even more to ban. Packing gland are not allowed to skew or no preloaded gap, to honor by the snow and sand dust contamination in the environment of electric Industrial Valves, the Industrial Valves stem to install shield. Electric valve rod should be marked clearly, then should be complete, accurate, clear, etc. , the stem and stem nut of trapezoidal thread wear. After repair of electric valve assembly should have sealing performance test, long stored electric valves should be inspected periodically and rust-proof oil coating on the surface of the processing. Body materials should give priority to with nodular cast iron, secondly to indicate the brand, as well as some chemical test data, and so on. Secondly for the material of valve stem is also very important, strive to stainless steel stem, large diameter valves should also be embedded package of stainless steel stem. Different categories of electric valve sealing methods and different material requirements, common types of gate copper ring material and fixed way and grinding way shall be that second electric valve sealing surface of different material life, ordinary wedge gate valve, the material of copper ring, fixed way and grinding way shall specify; In daily life usage of electric Industrial Valves is higher, and choose according to use different types, the second choice suits own is the best, shop around. So the advantage of electric valve and power factory and how many? Particular case is particular analysis, according to the specific circumstances. Secondly, a detailed analysis to its functional features.
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