ITT Engineered Valves
Fabri-Valve C67 Bi-Directional Knife Gate Valve
The Fabri-Valve C67 is a bi-directional knife gate valve that seals bubble-tight in both flow directions across its full pressure rating. Its patented trapezoidal perimeter seat makes it a dependable choice for demanding abrasive slurry and wastewater isolation where flow direction cannot always be guaranteed.
Product Benefits
- Sealing in both directions: Most knife gate valves seal properly in only one direction, which complicates piping design and creates risk if the line can see reverse pressure. The C67's patented perimeter seat seals bubble-tight either way.
- Orientation-free installation: Because it seals both ways, the valve can be installed without worrying about orientation and used confidently for dead-end or reversing services.
- Relief behind the seat: A relief area cast behind the seat reduces compression set in the elastomer, helping the seal stay tight as service conditions vary over time.
- One-piece cast body: The one-piece cast stainless steel body adds rigidity and corrosion resistance that fabricated or split bodies struggle to match.
Where It's Used
- Slurry and wastewater: The C67 is aimed at demanding abrasive slurry and wastewater applications, from process isolation in treatment plants to solids-laden lines in heavy industry.
- Optional flow control: An optional V-Port configuration extends the valve beyond simple open-close isolation where a degree of flow control is useful.
- One platform, any actuator: Its self-supporting universal yoke accepts handwheel, bevel gear, chainwheel, cylinder, or electric actuation, so the same valve serves manual stations and automated systems alike.
Good to Know
- Stainless steel castings: Bodies are one-piece castings in several stainless steel grades, with the gate material matched to the body.
- Elastomer is the choice: Seat elastomer selection is the key decision. White EPDM is standard, and a wide range of alternatives such as Viton, Aflas, and Neoprene cover different temperature ranges and chemistries.
- Integral gate lockout: The universal yoke includes a gate lockout for safe isolation during maintenance.
- Share your service data: As with any resilient-seated valve, matching the elastomer to the process fluid and temperature is what determines seal life, so include your service details when requesting a quotation.
