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Penetration-Type Knife Gate Valve (Two-Way Sealing)

Penetration-Type Knife Gate Valve (Two-Way Sealing)

Structural Features

• The gate is longer than the valve body, allowing it to completely penetrate the valve body during opening and closing.

• It has a guide bracket at the top and generally an outlet cover/discharge port at the bottom.

• The gate operates more stably, without deviation or bending.

• Mostly wafer or flange type, providing greater overall rigidity.

• Driven manually, pneumatically, or electrically.

Product Description

Core Advantages

 

1. No jamming or material accumulation: Debris is directly carried out of the valve body by the gate, preventing it from getting stuck at the bottom.

2. More reliable sealing: The gate is guided throughout its travel, ensuring a tight fit and significantly better shut-off performance than ordinary knife gate valves.

3. Wear-resistant and deformation-resistant: The long stroke and guide design prevent the gate from bending or breaking.

4. Easy to clean and maintain: The bottom can be opened to clean debris without disassembling the entire valve.

 

Applicable Operating Conditions

 

• Media: High-concentration slurry, mud, mineral slurry, coal slime, tailings, ash, sludge

• Industries: Mining, metallurgy, power plant ash removal, wastewater treatment, tailings transportation

• Features: Suitable for scenarios where media contain many particles, are prone to sedimentation, and where ordinary knife gate valves frequently jam.

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Penetration-Type Knife Gate Valve (Two-Way Sealing)

Penetration-Type Knife Gate Valve (Two-Way Sealing)

Structural Features

• The gate is longer than the valve body, allowing it to completely penetrate the valve body during opening and closing.

• It has a guide bracket at the top and generally an outlet cover/discharge port at the bottom.

• The gate operates more stably, without deviation or bending.

• Mostly wafer or flange type, providing greater overall rigidity.

• Driven manually, pneumatically, or electrically.

Concealed Plate Knife Gate Valve

Concealed Plate Knife Gate Valve

Structural Features

• Concealed valve stem: The drive screw is hidden inside the valve body/support, not exposed.

• The gate moves up and down within the valve cavity, resulting in a cleaner appearance.

• Generally a clamp-type connection, flange type is also available.

• Sealing is mostly soft seal (rubber) or hard metal seal.

• Drive methods include manual, pneumatic, and electric.

Ceramic Knife Gate Valve

Ceramic Knife Gate Valve

Ceramic knife gate valves (also known as ceramic knife-type gate valves) are special valves that combine a knife gate valve with a high-performance ceramic seal. The core seal and flow components are made of toughened alumina/silicon carbide ceramic, while the valve body is typically made of carbon steel (WCB) or stainless steel (304/316L).

Structure and Principle

• The opening and closing element is a knife-edged gate, moving perpendicular to the media flow direction, cutting media containing particles and fibers through shearing.

• The gate rises and falls within a side guide groove, and the bottom lug tightly presses against the valve seat, eliminating cavities, slag accumulation, and jamming.

• The valve seat commonly uses a protective lip ceramic ring + O-ring to achieve a bidirectional hard seal, with a leakage level reaching ANSI Class VI.

Slurry Valve

Slurry Valve

Structural Features

• Mostly adopt a knife gate structure (knife-type slurry valve)

• Straight flow path with no dead angles, less prone to slurry accumulation and slag blockage

• Valve body, gate, and sealing surfaces are all treated with wear-resistant materials

• Common materials: polyurethane lining, wear-resistant alloy, ceramic, wear-resistant rubber

• Connections are mostly wafer type or flange type, predominantly for large diameters

+86 19858780995

+86 19858780995

+86 19858780995

+86 19858780995

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