Non-Rising Stem Knife Gate Valve

The Non-Rising Stem Knife Gate Valves adopts metal to metal hard seal or adopts metal to rubber soft seal. In the process of opening and closing, the gate and the sealing surface are specially designed with less friction and durability.The upper seal of the knife gate valve has broken through the conventional seal form. The upper cover structure is used to make the upper seal changed from a large area of rectangular seal to a small area of circumferential seal, and the sealing performance is greatly improved. On the basis of circumferential seal, the international advanced floating seal structure is adopted at present, which makes the upper seal reach the same life as the pipe, thus improving the service life of the valve as a whole.

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Product Description

The Non-Rising Stem Knife Gate Valves adopts metal to metal hard seal or adopts metal to rubber soft seal. In the process of opening and closing, the gate and the sealing surface are specially designed with less friction and durability.The upper seal of the knife gate valve has broken through the conventional seal form. The upper cover structure is used to make the upper seal changed from a large area of rectangular seal to a small area of circumferential seal, and the sealing performance is greatly improved. On the basis of circumferential seal, the international advanced floating seal structure is adopted at present, which makes the upper seal reach the same life as the pipe, thus improving the service life of the valve as a whole.

 

Technical Specification
Normal SizeRange: 2"-80"
Normal Pressure Rating: PN10~PN16, CLASS150
Material: GG25,GG40,WCB, CF8,CF8M,CF3,CF3M
Operation: Handwheel, Pneumatic, Electric, Chainwheel. Lever

Seat: EPDM, Viton, Metal, PTFE, NBR

Temperature Range: -29~150Degree C


Standards compliance

Design and Manufacture: GB/T12237

Face to face(end to end): GB/T15188.2

Flanged connection: ANSI B16.5, GB/T 9113

Test and inspection: API 598, GB/T 13927

 

 

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