knife edge gate valve Description
Knife-edge gate valve (also known as knife-shaped gate valve, knife gate valve) is a valve with a blade-shaped gate as the core opening and closing component. The vertical lifting and lowering of the gate plate cuts fibers, particles or viscous media to achieve fluid control. Its structural features are a chamberless valve body and a wedge-shaped sealing surface design, which supports two-way sealing, and is lightweight, low flow resistance and high sealing, and is particularly suitable for working conditions with high wear and high impurity content.
knife edge gate valve specification
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Execution materials
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Stainless Steel,Cast iron
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Body material
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Stainless Steel (SS304)
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Optional size
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2"~16", DN50~DN400
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Sealing Material
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NBR,EPDM,PTFE,Metal seal
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Applicable Media
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Gas, liquid, water, oil control
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Applicable temperature
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-10-80 ℃
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Optional actuator function
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Switching type, regulating type, intelligent type
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Optional collocation
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Electric valve, sealing ring, limit switch, actuator
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Operating pressure
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1.6~6.4 M Pa
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Lifespan
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1,500,000 (1 Million) Times
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Optional Accessories
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Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device
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Application
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Food & Beverage, Water & Wastewater, Ultra Pure Water, Desalination, Chemical, Textile, Pharmaceutical, Pulp & Paper, Mining,
Boiler and Power Industries |
knife edge gate valve
Problems solved
Blocking problem of high-impurity media:
The blade-shaped gate can cut off fibers, slurry and granular impurities, and the full-diameter design reduces the risk of flow channel blockage.
Applicable to pipeline systems containing complex media such as coal ash, pulp, slag, etc..
Sealing failure and leakage risk:
The wedge-shaped gate and the valve seat are self-enhanced by the medium pressure seal, combined with O-rings or PTFE soft seals, and the leakage level reaches ANSI standards.
The two-way sealing design prevents leakage of sewage and corrosive media.
Corrosion resistance and long life requirements:
The material can be stainless steel, fluorine-lined or special alloys, which are suitable for corrosive environments such as strong acids, strong alkalis, and salt spray.
Surface polishing or passivation treatment reduces microbial attachment and extends the service life of valves in the food and pharmaceutical industries.
Space and cost constraints:
The compact structure and small size are suitable for industrial scenes such as mining and metallurgy with dense pipelines.
Easy maintenance (such as modular design) reduces downtime and replacement costs.
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