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ITT Engineered Valves Fabri-Valve® Heavy Duty Knife Gate Valve
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ITT Engineered Valves Fabri-Valve® Heavy Duty Knife Gate Valve


Fabri-Valve Figures C37 and F37 are some of the most popular knife gate valve configurations. Figure C37 knife gate valves through 24”, feature a heavy duty, rugged one-piece cast body, chest and flanges (except 5”, which is fabricated – F37). Sizes larger than 24” are fabricated from heavy plate.

The Figure C/F37 is available in all stainless steel (designated “S”) or with alloy steel wetted parts and carbon steel external parts (designated “R”). In sizes 1.5” through 24”, the “S” and the “R” share the same solid cast body. Sizes larger than 24” feature fabricated bodies configured to the service conditions.

The Figure C/F37 is available with the widest range of seats in the industry including: integral metal, replaceable hardfaced metal, rubber “D” ring, replaceable rubber, polyurethane, UHMW-P, and PTFE. Standard body materials include 304, 316, and 317L stainless steel. Special alloys such as 254 SMO® are also available. Special flange drillings are also available.


• “D” Ring Seat
• Lever Operator
• Dual Seats
• Poly Replaceable Seats
• UHMW Replaceable Seats
• PTFE Replaceable Seats
• Rubber Replaceable Seats
• Hard Faced Replaceable Seats
• Elastomer Replaceable Seats
• Hard Faced Gate Edge
• Hard Gate Material
• Nickel-TFE Coated Gate
• Epoxy Coating
• Thru Drilled Flanges
• Flush Ports
• Chest Buttons: Not available 2”-6”
• Centerline Buttons
• Backing Ring
• Extra Wedges
• V-Port
• Cast Ni-Hard Deflection Cones available 3”-16”
• Fabricated Deflection Cones
• Locking Devices
• Live Loaded Packing
• Self-Supporting Yokes
• Alternate Flange Drilling
• Bevel Gear
• Chainwheels
• Cylinder Actuators
• Electric Actuators
• Ratchet
• Extended Stems
• Gate Support Strips
• Rod Boots


Size Range

  • 1.5” – 96”

Pressure Rating

  • 1.5” – 24”: 150 psi (10.3 bar) CWP (cold working pressure)
  • 25” – 48”: Designs available in 50 psi (3.5 bar), 100 psi (6.9 bar) or 150 psi (10.3 bar) CWP
  • Larger than 48”: Manufactured to customer specification

Temperature Rating

  • 1.5” – 48” 450°F (232°C).
  • Service temperatures above 400°F (204°C) require high temperature fasteners. Specify service temperature on paperwork. Consult factory for sizes larger than 48”(DN 1200) and for service temperatures up to 1500°F (816°C).

Flange Drilling

  • ANSI 125/150


ITT Engineered Valves are essential equipment in industries ranging from mining to biopharmaceuticals, from nuclear operations to oil sands. With experience in valve development, design, manufacturing, installation and automation, product offerings include market-leading industrial knife-gate and hygienic diaphragm valves.


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