Heavy Duty Knife Gate Valve
Fabri-Valve® CF37 Heavy Duty Knife Gate Valve
Sizes larger than 24" feature fabricated bodies configured to the service conditions.
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: 304, 316, and 317L stainless steel.
Special alloys such as 254 SMO® are also available.
Special flange drillings are also available.
Fabri-Valve are some of the most popular knife gate valve configurations.
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.
Fabri-Valve® CF37 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.
C/F37 knife gate valves with handwheels include a provision for a locking device.
Size Range: 1.5" – 96"
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": Available on request
1.5" – 48" 450°F (232°C).
Service temperatures above 400°F (204°C) require high temperature fasteners.
Sizes larger than 48"(DN1200) available on request
Temperatures up to 1500°F (816°C).
Flange Drilling: ANSI 125/150
Every Fabri-Valve Figure C/F37 valve is fully tested prior to shipment.
Testing includes a body shell test, a seat test and a cycling test to insure proper functioning of moving parts.
Standard Shell test:
• Hydro test at 1.5 times the rated CWP (cold working pressure) – Zero allowable leakage
Standard Seat test:
• Metal Seat: Hydro test at 40 psi (2.8 bar) and at the rated CWP
• Resilient Seat: Hydro test at 15 psi (1 bar) and rated CWP