HenryPratt Fig 93 Metal Seated Knife Gate Valve

Pratt® resilient seated knife gate valves range in size from 2” to 24” and are available in ductile iron or stainless steel.


  • Cast stainless steel body, packing gland, and yoke.
  • Heavy-duty body designed to resist deflection from line loads and internal pressure.
  • Body cavity, seat configuration, and beveled gate design provide shut-off capability in thick media such as pulp stock and slurries, or solid media such as pellets and powders.
  • Heavy-duty cast stainless steel yoke will not bend or twist under extreme loads.
  • Easy conversion from handwheel operator to hydraulic or pneumatic cylinder, bevel gear, chain wheel, electric motor, or fail-safe spring cylinder operator using an existing cast yoke.
  • Enclosed bronze stem bushing provides reduced operating torque and protection of the stem bushing in harsh environments.
  • Hard-faced seat is available to prevent galling in the high cycle and/or high-end pressure or abrasive applications.
  • Factory-installed V-Port inserts are available for metering or throttling service.
  • O-Ring resilient seat available.
  • Precision-machined stainless steel gate provides superior seating capability.
  • Knife Gate designed to withstand full 150 PSI rated pressure as required by MSS-SP-81.
  • Stainless steel stem resists corrosion.
  • Various wiper materials are available in packing to provide gate support and stabilize the packing seal.
  • Standard TFE lubricated synthetic packing (TLSP) rated to 500° F and pH range of 3-11.
  • Knife Gate Valve Full Port ID.
  • MSS SP-81 Stainless Steel, Bonnetless, Flanged Knife Gate Valves.
  • AWWA C520-10 Knife Gate Valves, 2″ – 96″

Specs & Brochures