Check valve shall determine the size of the corresponding, Industrial Valves providers must provide the size of the selected data, so much to find a given velocity when the valve is fully open valve size range. Barrier type check valve gap type check valve is practical in the pipeline water hammer in easy breeding, gap is a good way to eliminate medium upstream occurrence of water hammer, it is often used in low pressure pipe at room temperature, especially useful in water pipe road, in - something usually medium temperature 12 - - Between 120 ℃ and things pressure & lt; 1. 6 mpa, but gap type check valve can achieve large caliber, DN biggest can reach more than 2000 mm; Ball check Industrial Valves ball check valves and practical in the low pressure pipe, can be made into large diameter; Ball check valve shell material can be made of stainless steel, the seals of the hollow spheres can wrap teflon engineering plastics, with is in the pipeline as often corrupt media could also be used, temperature in - things 101 - - Between 150 ℃, its nominal pressure of 4 or less. In 200-0 mpa, nominal menstruation category 1200; Other, not to deal with at the time of the compressibility of the fluid in check valve selection of primary held closed rate of necessary evaluation, the second step is to choose the satisfied about the necessary examples of check valve closed rate. When dealing with compressible fluid in check valve selection can credentials cannot fluid compressibility held in check valve of the main point to the same choice, if big medium activity category, used for compressible fluid check valve can use a speed reducer, if the medium flow is quickly stop and start the day in a row, as the export of compressor, the use of ups and downs type check valve. Check valve shall determine the size of the corresponding, valve providers must provide the size of the selected data, so much to find a given velocity when the valve is fully open Industrial Valves size range.
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