Flange wedge gate valves are widely used in petrochemical, thermal power plants and other oil and steam pipelines as opening and closing devices for connecting or cutting off the medium in the pipeline. Wedge gate valve is a kind of gate valve. It is named because its sealing surface is at an angle to the vertical centerline, that is, the two sealing surfaces are wedge-shaped. Generally, for a gate valve with two sealing surfaces in a wedge shape, the angle between the sealing surface and the vertical centerline is 2°52', 3°30', 5°, 8°, 10°, etc. Wedge gate valves are divided into bright stem gate valves and dark stem gate valves, wedge single gate valves and wedge double gate valves. The driving methods are: electric, pneumatic, manual, pneumatic and hydraulic, etc. The connection methods are flanged, welded, and clamped.
Flange wedge gate valve
Main features of flange wedge gate valve
1. Compact structure, reasonable design, good valve rigidity, smooth passage and small flow coefficient;
2. The sealing surface is made of stainless steel and hard alloy, which has a long service life;
3. Using flexible graphite packing, reliable sealing, light and flexible operation;
4. The driving mode is manual, pneumatic, electric, gear transmission;
5. The structure is elastic wedge single ram, rigid wedge single ram and double ram type
Main technical parameters of flange wedge gate valve