• Knifegate Valves
    Knifegate Valves

Knifegate Valve

Designed for tough abrasive and corrosive applications Jindex Knifegate Valves appropriate for many applications including dry and wet slurries for the mining, power, materials handling, water waste water and cement industries.

Our standard designs incorporate many features which provide excellent wear resistance and avoid many of the design deficiencies of traditional knifegates.  The Jindex “Flush Seat Design” will eliminate solids compacting in the seat area and jamming the valve, this is a vast improvement over traditional seat designs.

Depending on the actuation requirements we are able to offer manual, pneumatic, hydraulic and electric operation with limit switches, positioners, solenoids and other accessories as required.

The Jindex design will provide:

  • Superior Seat Life
  • Superior Packing Life
  • Elimination of valve jamming

A variety of stuffing box packings are available along with body and actuator materials for corrosive atmospheres



  • Wafer or Lugged Body Style
  • Full Port
  • Bi-Directional Shut Off Resilient Seated Design
  • Live Loaded Packing Gland

Material of Construction

  • Cast Steel, Stainless Steel, Cast Iron Body
  • Stainless Steel Blade
  • Elastomer or Metal Seated

Standard Sizes

  • 50mm – 1000mm


  • Pneumatic or Electric or Hydraulic Actuation
  • Limit Switch (Mechanical or Proximity)
  • Smart (HART, Profibus, Foundation Fieldbus),
  • Electro-Pneumatic (4 – 20 mA)
  • Pneumatic (20 – 100 kPa) Positioner.
  • Scrapper Blades
  • Electronic feedback within the actuator for applications
  • where mechanical feedback is problematic (i.e. long or dirty applications).
  • Control Cabinets
  • Air Reservoirs