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Introduction of Knife-shaped Gate Valve

by Adamant Valves

Knife-shaped gate valve has the advantages of simple and compact structure, reasonable design, light materials, reliable sealing, light and flexible operation, small size, smooth channel, small flow resistance, light weight, easy installation and easy disassembly. It completely solves the difficult problem of heavy weight, large flow resistance, large area and difficult installation commonly found in ordinary valve, plate gate valve, sanitary shut-off valve, sanitary regulating valve, sanitary butterfly valve and sanitary ball valve. It can replace universal shut-off valve and regulating valve. It can normally work under working pressure of 1.0MPa-2.5MPa and operating temperature of -29-550 degrees Celsius. The gate plate of the knife-shaped gate valve has a shearing function, which can scratch off the adhesive on the sealing surface and automatically remove the debris. The stainless steel gate plate can prevent the sealing leakage caused by corrosion.

The scope of use of knife-shaped gate valve:
Knife-shaped gate valve is suitable for the coal preparation and slagging for mine power plant, urban sewage treatment, and oil, water and steam pipes of food, paper, medicine, petroleum, chemicals, connecting or shutting off cement slurry, gold powder, ore, slag, slime, pulp, wood pulp, tailings, fiber, dust, chemical sewage, sedimentation tanks, asphalt, silo outlet, fruit, grain, slaughterhouse sewage and other media in the pipe.

knife gate valve

Product features of knife-shaped gate valve:
1. Liftable sealing surface of the gate plate, which can scratch off the adhesive on the sealing surface and automatically remove the debris.
2. The stainless steel gate plate can prevent the sealing leakage caused by corrosion. Fine grinding and polishing can get a better sealing effect. The bottom of the knife board is machined into a blade, which has a shut-off function on soft materials such as fiber, pulp and wood pulp, and has a good opening and closing effect. Hard PTFE mud scraper is installed at the upper part of the knife board, which can prevent dust, gravel and other scratching materials from entering the packing box, which can significantly improve the service life of the knife board.
3. The stainless steel valve body is durable. The stiffeners of the valve body can improve the strength of the valve body. The use of double snail makes the opening and closing more quickly.

knife gate valve
4. The overall stainless steel material can prevent corrosion damage. Valve body and the stuffing culvert are both precision machined. The valve body is cast in whole using flange type. According to user needs, the materials can be 304, 316, 316L, WCB, 2Crl3, etc. The sealing ring uses reinforced PTFE, which is corrosion-resistant, wear-resistant.
5. All-round direct flow channel does not store slag and does not jam.
6. Scientific design of upper sealing stuffing culvert makes the upper sealing safe, effective and durable.
7. Short structural length can save raw materials and space for installation, and can also effectively support the pipeline strength.
8. Triangle stent saves raw materials and ensures the required mechanical performance.
9. The guide block on the valve body makes the gate plate move correctly. The squeeze block ensures effective sealing of the gate plate.
10. Knife-shaped gate valve can also arbitrarily choose the actuating mechanism.
11. V-shaped gate plate can be used as regulating valve.
12. Compact design, small occupation of space, light weight, low cost, easy installation, perfect wear-resistance and anti-blocking measures, easy maintenance, convenience in use and long service life.
13. There are five supporting points on the valve plate, which makes the valve plate self-centered.


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