Corrugated pipe cut-off valve of the nine main structural characteristics of corrugated pipe cut-off valve is evolved by the cut-off valve, the cut-off Industrial Valves on the basis of combined with corrugated pipe, high temperature in some system as a kind of special switch valve in pipeline, has high sealing performance, special bellows seal structure make it widely used in thermal pipe line system, steam pipe system, depending on the corrugated tube heat shrink principle, on the road at the pipe of temperature higher than 300 degrees above, best effect. Bellows globe valve is generally applicable to steam piping, steam temperature is higher, the stronger the seal, a valve is the most commonly used in the steam system, heat conduction oil system also has a high evaluation. Structural characteristics of 1, double durable bellows seal design ( Bellows + packing) To ensure the valve stem zero leakage. 2, there is no fluid loss, reduce energy losses, improve the plant equipment safety. And comply with the international standard for sealing; 3, sealing surface welding Co in cemented carbide, wear-resisting, corrosion resistance, resistance to friction performance is good; 4, long service life, the valve stem conditioning and surface nitriding treatment, good corrosion resistance and friction resistance; 5, the valve stem lift position indicator, more intuitive. 6, imported soft, corrosion resistant, heat-resistant metal bellows seal technology manufacturing; 7, wear resistance of high performance of elastic metal bellows seal telescopic life of special life long; 8, eliminates the common stop valve stem packing seal aging fast easy leakage faults; 9, increase production equipment safety, but also provides a clean and safe work environment. Design specifications corrugated pipe cut-off valve through the body and the valve stem or cover with a layer of metal corrugated pipe welding between the valve stem, to partition between the fluid and the atmosphere of unicom, is a kind of to ensure that the valve stem a design of zero leakage. Traditional corrugated pipe cut-off valve body, valve cover, Industrial Valves disc, valve stem, corrugated pipe and valve stem drive, bonnet is set on the upper body, and from the upper sealing valve body, valve set within a valve body, valve body set up by the valve opening and closing of flow channel, the stem end is connected with the disc, on the other side wear a bonnet, and connected to the stem drive device, the Industrial Valves stem drive work to drive the stem and disc synchronous hoist, corrugated pipe set on the valve stem, and one end connected to the valve rod welding, the other end connected to the valve cover welding, the body set with the disc of seal, when the seal with the valve body extrusion closed port, when the body from seal open port. Because bellows direct contact with the fluid medium, solids content is higher in transportation of fluid, fluid solid particles in the random impact bellows extremely easily, cause corrugated pipe burst and damage, eventually lead to leakage phenomenon.
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