Knife Gate Valve

Resilient slurry knife gate valves for extreme temperatures, pressure, and abrasive media applications.

Heavy-Duty Knife Gate Valves

Pioneer Valve knife gate valves are engineered for the toughest applications in slurry, pulp, wastewater, and mining industries. Featuring a sharp-edged gate that cuts through heavy media, these valves provide reliable shutoff in services where conventional valves fail. Available in both bidirectional and unidirectional sealing configurations.

  • Bidirectional & unidirectional sealing options
  • Ideal for slurry, pulp, and wastewater
  • Mining and heavy industry applications
  • Resilient seated design
  • Manual, electric, and pneumatic actuators
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Knife Gate Valve Types

PSK-S1 Polyurethane Lined Knife Gate Valve

PSK-S1 Polyurethane Lined

Unidirectional. 8x wear resistance. Full bore design.

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QB Series Unidirectional Knife Gate Valve

QB Series Unidirectional

Standard design for general industrial use. DN50-1400.

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QV Series Unidirectional Knife Gate Valve

QV Series Unidirectional

Wide range unidirectional. Corrosion resistant design.

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QVY Series Heavy Duty Knife Gate Valve

QVY Series Heavy Duty

Large diameter up to DN3000. High pressure capability.

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QP Series Bi-Directional Polyurethane

QP Series Bi-Directional PU

Polyurethane lined. Zero leakage design. Anti-corrosion.

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QJ Series Rubber Lined Knife Gate Valve

QJ Series Rubber Lined

Bi-directional seal. Elastic sealing. Wafer type.

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QM Series Bi-Directional Knife Gate Valve

QM Series Bi-Directional

Standard design. Wide size range. General purpose.

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QS Series Mining Grooveless

QS Series Mining Special

Grooveless wear-resistant. Tailings & slurry focus.

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QU Series Bi-Directional Knife Gate Valve

QU Series Bi-Directional

General purpose. Versatile operations. Ductile iron body.

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QC Series Through Type Knife Gate Valve

QC Series Through Type

Bi-directional. Compact structure. Full bore flow.

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QW Series Self Sealing

QW Series Self Sealing

Bi-directional. High pressure capability. Slurry focus.

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QWY Series Bi-Directional Flange

QWY Series Flanged

Heavy duty flanged end. Silt dredger application.

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QWL Series Lug Self Sealing

QWL Series Lug Self Sealing

Lug type connection. Bi-directional seal. Chemical industry.

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Technical Data

Model Type Size Range Pressure Standard
PSK-S1 Polyurethane Lined DN50~750 PN10~25 MSS SP-81
QBZ73X Unidirectional DN50~1400 2~16 bar MSS SP-81
QPZ73X Bi-Directional PU DN50~700 8~16 bar MSS SP-81
QSZ73X Mining Grooveless DN50~250 5~10 bar MSS SP-81
QWZ73X Self Sealing DN50~800 2~16 bar MSS SP-81

Industry Applications

Wastewater Treatment

Water & Wastewater

Ideal for sludge, raw sewage, and effluent handling with zero leakage performance.

Mining and Mineral Processing

Mining & Minerals

Heavy-duty knives cut through tailings, slurries, and abrasive media effectively.

Chemical & Petrochemical

Pulp & Paper

Full bore design prevents clogging in fibrous liquids, pulp stock, and paper mill waste.

All Knife Gate Valve Models

PSK-S1

Polyurethane Lined Knife Gate Valve

QBZ73X

Unidirectional Knife Gate Valve

QCZ73X

Through Type Knife Gate Valve

QJZ73X

Rubber Lined Knife Gate Valve

QMZ73X

Bi-directional Knife Gate Valve

QPZ73X

Bi-directional PU Lined Knife Gate Valve

QSZ73X

Mining Grooveless Knife Gate Valve

QUZ73X

Bi-directional Knife Gate Valve

QVYZ73X

Heavy Duty Knife Gate Valve

QVZ73X

Unidirectional Knife Gate Valve

QWLZ53X

Bi-directional Self Seal Knife Gate Valve

QWYZ43X

Bi-directional Flange Type Knife Gate Valve

QWZ73X

Self Sealing Knife Gate Valve

Knife Gate Engineering Guides

Specifying a knife gate valve? Start with our engineering resources:

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