Make Severe Service Flow Control Easy

Introduction of Knife Gate Valve

Verspec Valve 1117

    Knife gate valve is also called knife gate valve, knife gate valve, slurry valve, and mud valve. Its opening and closing part is a gate. The movement direction of the gate is perpendicular to the direction of the fluid. 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 5°. The gate of the wedge knife gate valve can be made into one The whole is called a rigid gate; it can also be made into a gate that can produce slight deformation to improve its manufacturability and compensate for the deviation of the angle of the sealing surface during the processing. This kind of gate is called an elastic gate. The valve body does not actually have a chamber. The gate is raised and lowered in the side guide groove, and is pressed against the valve seat by the bottom lug. If you need to achieve higher media tightness, you can choose an O-shaped seal valve seat to achieve Two-way sealing. The knife gate valve has a small installation space, low working pressure, is not easy to accumulate debris, and the price is low.

    When the knife gate valve is closed, the sealing surface can only rely on the medium pressure to seal, that is, rely on the medium pressure to press the sealing surface of the gate against the valve seat on the other side to ensure the sealing of the sealing surface. This is self-sealing. Most gate valves are Forced sealing is adopted, that is, when the valve is closed, the gate must be forced to the valve seat by external force to ensure the sealing performance of the sealing surface. This type of valve should generally be installed vertically in the pipeline.

    Knife gate valve driving mode: manual, sprocket, electric, pneumatic, hydraulic, bevel gear, electric control hydraulic and pneumatic hydraulic driving modes. Knife gate valve shape: two kinds of open rod and dark rod. 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.

    The ultra-thin knife gate valve completely solves the large flow resistance of ordinary gate valves, flat gate valves, ball valves, globe valves, regulating valves, butterfly valves, etc. with its advantages of small size, small flow resistance, light weight, easy installation, and easy disassembly. , Heavy weight, difficult installation, large area and other difficult problems. After the emergence of knife gate valves, a large number of general shut-off valves and regulating valves have been replaced. The world's largest consumption of knife gate valves is the United States and Japan.

The scope of application of knife gate valve

  1.  Mining, coal washing, iron and steel industry-used for coal washing pipelines, filter slurry pipelines, etc., ash discharge pipelines;
  2.  Purification device-used for waste water, mud, dirt and clarified water with suspended matter;
  3.  Paper industry-used for any consistency of pulp, material and water mixture;
  4.  Deashing of power station-used for ash slurry

Company Profile

2005——Start to produce ceramic lined valve series.

2006——Start to produce rubber seat dome valve, knife gate valve and pinch valves.

2010——Joint venture start to produce Teflon plastic lined valve series.

2016——VerSpec US warehouse operated in Akensas.

2018——VerSpec Korea branch operated in Cheonnam.

2019——VerSpec India and VerSpec Mexico start operating.
Tel: +86-577-57666870  

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