Gasket leak: the main reason is impatience corrosion, not suited to working temperature and pressure;, high temperature valve temperature changes. Prevention: adapt to the working conditions of the washer, want to check on the new valve gasket material suitability should be replaced if not suitable. High temperature valve to use tight again bolts.
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Body cracking result: generally frozen. When it s cold, the valves should have insulation and heating measures, otherwise discontinued after should the valve and connecting pipe in the water to drain clean (if there is a valve at the end plugs, open wire blocking drainage).
The hand wheel damage: due to the impact or long lever violently operation. As long as the operator and other relevant personnel, could have been avoided.
Packing gland rupture: compression packing uneven force, or gland (usually cast iron) defective. Compression packing, rotary screw symmetry to not skew. Manufacture not only pay attention to the large and critical pieces, should also pay attention to the elements of the gland such times, otherwise the impact of the use.bsp connector
Stem and the valve plate connection failure: gate valve stem rectangular head with ram T-slot connection in the form of more T-shaped groove sometimes not processing, so that the stem rectangular head wear faster. Mainly from manufacturing to solve. But the use of units of the T-shaped slot complement processing it finish.hydraulic fittings suppliers
Gate valve gate can not be pressed tightly cover: double plate tension * top wedge, some poor valve, top wedge material (low-grade cast iron), using the soon worn or broken. The top wedge small pieces, not many of the materials used, using the unit can produce its own carbon steel, replaced the original iron castings.
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