Pneumatic knife type gate valves can complete the action control and signal output of opening and closing positions by using accessories such as solenoid valves and proximity switches, as well as automatic control of continuous actions. Users can choose according to their actual needs. Pneumatic knife type gate valves are widely used in chemical, coal, sugar, sewage, paper and other fields. They are an ideal sealing valve, especially suitable for regulating and throttling pipelines in the paper industry.

When the pneumatic knife type gate valve is closed, the sealing surface can be sealed solely by the medium pressure, that is, the sealing surface of the gate is pressed against the valve seat on the other side by the medium pressure to ensure the sealing surface is sealed, which is called self sealing. Most gate valves use forced sealing, which means that when the valve is closed, external force must be used to forcefully press the gate plate against the valve seat to ensure the sealing performance of the sealing surface. This type of valve should generally be installed vertically in pipelines.
The driving modes of pneumatic knife type gate valves include manual, chain wheel, electric, pneumatic, hydraulic, bevel gear, electrically controlled hydraulic, and pneumatic hydraulic.
The appearance of pneumatic knife type gate valve includes two types: open stem and concealed stem.
The materials of pneumatic knife type gate valves include cast iron, cast steel, carbon steel, stainless steel, fluorine lining, etc.

Sealing of pneumatic knife type gate valve: hard seal, soft seal, single-sided seal, double-sided seal and other materials for sealing.
The structural characteristics of pneumatic knife gate valve:
1、 The raised gate sealing surface can scrape off the adhesive on the sealing surface and automatically clean up debris.
2、 Stainless steel gate can prevent sealing leakage caused by corrosion.
3、 The hard all gold sealing surface can ensure the sealing wear resistance performance and requirements.
4、 The sealing surface of the valve body has no grooves, so there is no accumulation and it can ensure flexible opening.
5、 Short structural length can save raw materials, installation space, and effectively support pipeline strength.
6、 The scientific design of the upper sealing stuffing box ensures that the upper seal is safe, effective, and durable.
7、 The triangular bracket saves raw materials and ensures the required mechanical properties.
8、 The guide block on the valve body enables the gate to move correctly, while the compression block ensures effective sealing of the gate.
9、 The design of reinforcing ribs on the valve body improves its strength.
10、 The stainless steel valve stem is durable, and the double headed screw can be opened and closed more quickly.