Tight conical plug valves, valves without packing, valve plug and valve body sealing surface between the metal by the body to seal. Sealing force by tightening the nut below the valve to achieve. In order to achieve a small pre-tightening force can be sealed, the sealing surface of the valve plug and valve body surface roughness values ​​must be as small as possible, and the geometric error must be small, taper with the standard must be allowed to make such a cock Valve easy to achieve sealed. The valve is easy to service and clean. When cleaning or overhauling, unscrew the lower nut and remove the gasket, the valve plug can be removed from the valve body for cleaning or repair. This type of plug valve made of austenitic stainless steel, the food industry and the pharmaceutical industry for the best choice.
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