Type: Knife Gate Valve Design & Manufactured to API 6D, ASME B16.34 or Equivalent P.T Ratings to ASME B16.34 Face to Face dimensions to ASME B16.10 Flanged Ends to ASME B16.5 Butt-weld Ends to ASME B16.25 Threaded Ends to ASME B1.20.1 Socket-weld Ends to ASME B16.11 Valves Marking to MSS SP-25 Inspect & Tested to API 598 Size Ranges from 1 1/2” thru 24” Pressure Ratings from Class 600 to Class 2500, PN110 to PN420 Structures in Bolted or Pressure Sealed Union Cover Ends Connections in Flanged R.F or RTJ, Threaded NPT, BSPT, Welded S.W, B.W and Grooved Body Materials available in Cast Carbon Steel, Low Temp. Carbon Steel, Alloy Steel, Stainless Steel, Monel, Alu. Bronze etc. Trim Materials available in 13%Cr, F11, F22, SS304, SS304L, SS316, SS316L and other specials.
Knife gate valve, also known as slurry valve, its opening and closing member is the gate, the direction of movement of the gate is perpendicular to the direction of the fluid, by the knife blade gate can cut fiber material to cut off the medium, the gate has two sealing surfaces, the most commonly used mode gate valve two sealing surfaces form a wedge, wedge angle varies with the parameters of the valve, usually 5 °, wedge type knife gate valve gate can be made into a The gate of the wedge-type knife gate can be made into a whole, called rigid gate; can also be made into a gate that can produce a slight deformation to improve its process, to make up for the deviation of the sealing surface angle in the process, this gate is called a resilient gate. The valve body actually does not exist in the chamber, the gate in the side guide groove to lift, and by the bottom of the lug pressed on the seat, if you need to achieve a high media sealing, O-seal seat can be used to achieve a two-way seal. Knife gate valve has a smaller installation space, low working pressure, not easy to accumulate debris, and lower price. Knife gate valve closed, the sealing surface can only rely on media pressure to seal, that is, rely on media pressure will be the sealing surface of the gate to the other side of the seat to ensure the sealing surface of the seal, which is self-sealing, most of the gate valve is used to force the seal, that is, when the valve is closed, to rely on external force to force the gate to the seat, to ensure the sealing surface of the seal. This type of valve in the pipeline should generally be installed vertically. Knife gate valve drive mode: manual, sprocket, electric, pneumatic, hydraulic, bevel gear, electric control and pneumatic-hydraulic drive mode. Knife gate valve shape: open stem, concealed stem two kinds. Knife gate valve material: cast iron, cast steel, carbon steel, stainless steel, fluorine lining, etc. Knife gate valve seal: hard seal, soft seal, single-sided seal, double-sided seal and other materials seal. Ultra-thin knife gate valve with its small size, low resistance, light weight, easy to install, easy to disassemble and other advantages completely solve the common gate valve, flat gate valve, ball valve, globe valve, regulating valve, butterfly valve and other types of valves with large resistance, weight, difficult to install, large footprint and other difficult problems. After the emergence of knife gate valve, a large number of general cut-off class valves and regulating valves have been replaced by the. The world’s largest amount of knife gate valve is the United States and Japan. Knife gate valves are used in the following areas.
1. Mining, washing coal, steel industry – for washing coal pipeline, filter slurry pipeline, etc., ash discharge pipeline.
2. Purification devices – for wastewater, slurry, dirt and clarified water with suspended matter.
3. Paper industry – for pulp of any consistency, material-water mixtures.
4. Power station ash removal – for ash slurry.
We focus on valves in standard and special materials as customer request. Our main materials show as the follows: Any request for other materials, please contact our machinery sales or engineering team on email.