What is a pneumatic knife gate valve

What is a pneumatic knife gate valve

Pneumatic knife gate valve is a new type of knife gate valve improved by Xinhe Valve on the basis of manual knife gate valve to meet the special working conditions of customers. It consists of a pneumatic device and a knife gate valve, which is convenient and quick to open.

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COVNA Industrial Automation Co., Ltd. was established in 2000, an automated valve specialist. Headquartered in Dongguan China, with 3 production bases located in Ningbo, Wenzhou and Dongguan. 

We Provide Electric Valve,Solenoid Valve,Pneumatic Valve,Electric Gate Valve,Electric Butterfly Valve,Pneumatic Control Valve,Motorized Valve,Pneumatic Knife Gate Valve,Control Valve Pneumatic,Pneumatic Actuated Valve,Motorized Operated Valve,Electric Ball Valve,Electric Actuated Ball Valve,Ball Valve,Gate Valve,Gate Valve,Butterfly Valve,Globe Valve,etc, You can browse related products and initiate consultations on our website.

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High Quality Pneumatic Knife Gate Valve

The pneumatic knife gate valve is operated by a pneumatic device, which makes up for the trouble of manual opening, and the design is more humanized and intelligent. It is widely used in coal mining, papermaking, metallurgy, sewage treatment, municipal administration, electric power, food and other industries.

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Frequently Asked Question

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The maintenance is convenient, and the seal of the valve can be replaced without removing the valve. The temperature is generally used below 120 ℃, high temperature can also be replaced with special materials.

Compared with ordinary gate valves, knife gate valves are simple in structure, small in size, flexible in operation, easy to install, and suitable for medium with higher consistency and solid particles. The full-bore knife gate valve design allows the valve to be used under dirty conditions, and the replaceable seat and packing make the valve easy to maintain.

Knife gate valve, also known as knife gate valve, knife gate valve, slurry valve, mud valve, its opening and closing part is a gate, the direction of movement of the gate is perpendicular to the direction of the fluid, and it is cut off by a blade-shaped gate that can cut fiber materials. Medium, the gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valve form a wedge. The wedge angle varies with valve parameters, usually 50. The gate of the wedge knife gate valve can be made into a whole , It is called rigid gate; it can also be made into a gate that can produce slight deformation to improve its manufacturability and make up for the deviation of the sealing surface angle in the process of processing. This kind of gate is called an elastic gate. There is no cavity in the valve body. The gate is raised and lowered in the side guide groove, and is pressed against the valve seat by the lugs at the bottom. If you need to achieve a higher medium tightness, you can choose an O-shaped seal valve seat to achieve Two-way sealing. Knife gate valve has a small installation space, low working pressure, is not easy to accumulate debris, and the price is low.

Our updates and blog posts

pneumatic-knife-gate-valve | Where the butterfly valve is applicable

{keyword},Butterfly valves are suitable for flow regulation. Since the pressure loss of the butterfly valve in the pipeline is relatively large, it is about three times that of the gate valve.

pneumatic-knife-gate-valve | How to choose electric butterfly valve

{keyword}.The disc of the butterfly valve is that the disc has a shaft rotating on the position of the valve seat. The angle of the rotation determines the opening and closing degree of the valve.

pneumatic-knife-gate-valve | Gate valve movement

{keyword},Most gate valves are forcibly sealed, that is, when the valve is closed, the gate must be forced against the valve seat by external force to ensure the tightness of the sealing surface.

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