High pressure flat gate valve
Description
Structural features:
1. Plate gate valve, as a two-position valve, is mainly used to control the opening and closing of the pipeline. The gate moves up and down to complete the opening and closing of the valve.
2, the product has casting and forging two kinds of structure for choice;
3, the high pressure difference condition is equipped with a diversion ring, the valve does not produce eddy current pressure boost, and effectively protect the sealing surface from direct erosion and corrosion of the medium, effectively prolong the service life;
4, close by the medium pressure difference to achieve automatic sealing, without additional stem axial force, so the closing torque is small, light and flexible operation, electric occasions can effectively reduce the valve electrical weight and motor power, stem size and packing size is greatly reduced, especially suitable for fast opening and closing occasions;
5, the closing position of the positioning requirements are low, easy to achieve the overall sealing opening and closing position convenient and reliable;
6, not affected by the medium high and low temperature and die brake caused by the valve stuck;
7, built-in special spring, adapt to the requirements of different media, the range of working pressure is not limited;
8. The sealing surface of valve seat and gate adopts the plasma spray welding machine to automatically surfacing cobalt-based hard alloy. The sealing surface has uniform hardness and HRC40 45, which can meet the high temperature and high pressure conditions below 650℃.
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