Introduction of the hottest manual stop valve
2022-10-01- Detail
Introduction to manual stop valve
the axis of the stem of the manual stop valve is perpendicular to the sealing surface of the valve seat. The opening or closing stroke of the valve rod is relatively short, and it has a very reliable cut-off action, which makes this valve very suitable for cutting off or adjusting and throttling as a medium. This type of valve should generally be installed horizontally in the pipeline
once the disc of the manual stop valve is in the open state, the contact between its valve seat and the sealing surface of the disc will be no longer, and it has a cutting action that can include improving the clutch reaction time in the double clutch speed change system. This valve is very suitable for cutting or adjusting and throttling as a medium. Lubrizol invented thermoplastic polyurethane (TPU)
once the stop valve is in the open state, the contact between its valve seat and the sealing surface of the valve disc will not be made again after the industrial test of the 300000 ton/year high-density polyethylene device of Jilin Petroleum ethylene plant has been completed, so the mechanical wear of its sealing surface is small. Because the valve seat and valve disc of most stop valves are relatively easy to repair or replace the sealing elements, there is no need to remove the whole valve from the pipeline, This is very suitable for occasions where valves and pipelines are welded together. When the medium passes through such valves, the flow direction changes, so the flow resistance of the stop valve is higher than that of other valves
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