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The Fabricast FIG 61 is a unique high performance knife gate valve design utilizing dual replaceable polymer seals. Designed and tested to MSS SP81 and ASME B16.5 specifications.


  • Dual Polymer seals (Teflon is Standard) fitted on 316 Stainless Steel retaining rings along with robust o-rings (EPDM Is Standard 300 Deg F.) that provides resiliency and seal loading. The o-rings also seal the machined retainer ring cavity in the valve body to eliminate external leakage. Seals, o-rings and retainer rings are easily replaced either in the shop or in the field.
  • Full Port
  • Bi-directional Drip Tight Shutoff.
  • 150 Psi CWP Rating.
  • Heavy Duty Cast CF8M 316 Stainless Steel Body and Packing Gland.
  • Valve body, retaining rings, stem and Polymer seals are precision CNC machined.
  • ASTM A240 316 Stainless Steel gate fully machined and surface ground to provide a smooth sealing surface for the seals. All edges are chamfered to extend packing life and provide a superior packing seal.
  • Heavy Duty Cast CF8 304 Stainless Steel Yoke, Stemnut Retainer and Stem Clevis.
  • 14″ and larger valves are provided with a ball bearing yoke bushing to reduce handwheel rimpull.
  • Braided Teflon Synthetic Packing is Standard 3-11 Ph Rating.
  • Cast WCB Steel Handwheel (weldable).
  • Easily adapted to Pneumatic Cylinder, Hydraullic Cylinder, Spring Cylinder, 3:1 and 4:1 Bevel Gear, Lever And Electric Motor Operator (no welding required). Note: not for deadend service unless a ring or blind flange is used


  • Alloys – 317l, Duplex 2205, 2507, 904l, Other – Contact Factory
  • Polymer Seals – HDPE, UHMWPE, Polyurethane – Contact Factory
  • Retaining Rings – Abrasion Resistant Hardened Stainless Steel
  • Mechanical Lockouts – Manual And Actuated Valves
  • OSHA Gate Guard
  • Pneumatic, Hydraulic And Spring Cylinder, Electric Motor, 3:1 or 4:1 Manual Bevel Gear, Lever, Chainwheel, Stem Extension
  • Packing – Ptfe, Graphite, Kevlar, Food Grade
  • Purge / Flushing Ports
  • Live Loaded Packing System
  • Limit/proximity Switches, Solenoid Valves, Air Sets, Speed Controls, Exhaust Mufflers, Positioners, Air Tank Failsafe System, Air Booster
  • V-port Or Engineered Shape Inserts For Flow Control
  • Inlet Deflector Cone
  • Ni-resist Alloy Stemnut
  • Specialty Gate Coatings
  • Bonneted Design