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Polyurethane Lined Type Knife Gate Valve

Knife gate valves have a sharp cutting edge designed to handle viscous, heavy liquids or other abrasive media. Their straightforward design and easy-to-operate valve setup make them ideal for wastewater treatment plants, cement plants, and mining facilities. With dedicated workshops and superior mold casting capabilities, LIXIN is sure to meet your knife gate valve needs.

 

KEY FEATURES:

  • Two-piece valve body.
  • Integral Polyurethane Lining.
  • Integral ultra-thin body structure.
  • Knife gate provides strong shearing force.
  • Face-to-face dimensions follow the short series design, and the lightweight valve body reduces the need for pipe support.
  • All ports are lined with PU, fully encapsulating the medium and providing a dead-angle-free flow path.
  • Seat and disc are designed with a unique self-flushing structure to prevent sedimentation and jamming during closing.
  • Integrated scraper cleans the disc surface to prevent caking and reduce operating resistance.
  • Consumable parts are designed for easy replacement, allowing the PU liner and disc to be replaced on site for efficient and energy-saving maintenance.
  • Polyurethane (PU) is a polymer with urethane repeating units in its molecular chain, offering exceptional wear resistance.
  • In immersion conditions, PU wear resistance is:
    • 8 times higher than cemented carbide.
    • 7 times higher than vulcanized rubber.
    • 3 times higher than ultra-high molecular weight polyethylene (UHMWPE).
Gate Valve

Applicable standard

Size Range
NPS 2”–48” / DN50–DN600

Main Material
Cast Iron

Temperature Rating
Soft Seat: -40 to +80°C

Stem Material
Stainless Steel

Pressure Rating
1.0 MPa, 1.6 MPa, 150 lbs

Directional / Stem Type
Bi-directional
Rising stem

Leakage Level
Soft seat: Zero Leakage

Body Style
Wafer

Disc Material
Stainless Steel
Duplex Steel

Flanged Drilling
ASME B16.5, EN 1092

Seat Material
Soft Seat: PU

Port Type
Reduced port

Design Standard
MSS SP-81, MFR Std.

Test Standard
MSS SP-81, MFR Std.

Face-to-Face
MSS SP-81, MFR Std.

Operation
Handwheel, Worm Gear, Electric, Pneumatic.

Application
Mineral Processing, Power plant, Waste Water Treatment, Paper Industries, Food Industries.

Note:
The carefully selected materials and modern design make our knife gate valve highly reliable.
If our knife gate valve does not meet your requirements, we can provide custom-made solutions.