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.
All Figure C/F37 knife gate valves with handwheels include a provision for a locking device. Consult factory for details.
The basic Fabri-Valve C45 features a solid ductile iron or carbon steel body with an integral cast metal seat. However, this valve is most often used with the patented, pop-in style replaceable seats, which are available in a variety of rubbers, polyurethane, UHMW-P, TFE, and hard-faced metal. The pop-in seats feature a much larger cross section and seating area than conventional knife gate valve seats thus providing a seating surface far removed from the flow stream. Replaceable seats offer a unique advantage; abrasion resistance, long seat life, and the convenience of easy seat replacement.
All Figure C45 knife gate valves with handwheels include a provision for a locking device.
CAUTION: (Replaceable soft seats) Review Fabri-Valve gasket/mating flange recommendations.
Fabri-Valve Figures C33 / C133 / F33 / F133 are bi-directional soft seated, slide gate valves designed for on/off service in heavy slurries. Specially designed body liners and constant contact seats minimize seat stress ensuring exceptional service life. Seats are self gasketing and are compatible with raised or flat faced, lined or unlined flanges. Figures C/F133 have a containment bonnet attached to the bottom flange to capture any discharge during cycling.
The Fabri-Valve Figure C67 features a unique, patented, perimeter seal that provides bi-directional shutoff. The seal is retained in the valve body by its trapezoidal shape. A relief has been cast into the valve body behind the seal. Designed to overcome the problems experienced with existing perimeter seal designs, the relief greatly reduces seal compression set; the shape of the seal eliminates leakage due to seat rollover, eliminates seal pullout due to fluid velocity, and eliminates grooves that collect material and prevent the valve from properly closing. This unique valve design is available in stainless steel and carbon steel. Stainless steel bodied valves have white EPDM seals as standard. Carbon steel bodied valves have black EPDM seals as standard. Black Viton or white Viton, AFLAS, Hycar, Hypalon, Neoprene, HNBR, and other seal materials are available as options.
All Figure C67 knife gate valves with handwheels include a provision for a locking device.
Recycle and rejects services are tough on valves. Over the years many new, and often expensive valve configurations have heen thrown at these applications without much success. Now, Engineered Process Solutions offers a specially configured knife gate valve that solves the valve problems common to these services.
Designed to address the specific service problems found in recycle and rejects service, the Fabri-Valve Figure C42 is configured to minimize the effects of the following service problems:
- Physical damage of the sealing surfaces (gate and seat) due to wire, staples and other debris, resulting in unacceptable sealing degradation.
- Clogging due to accumulation of wire, staples or other debris that is compacted into the bottom of the valve, resulting in the failure of the valve to close completely, and excessive leakage.
- Poor packing performance due to damage of the gate surface, abrasion and high cyclic conditions.
Fabri-Valve Figure C42 solves these problems by selecting tough materials for the components that face the tough conditions. The seat is protected on both the ID and face by a heavy overlay of special impact resistant alloy. The gate is precision ground from a very hard corrosion resistant alloy. Together they provide an effective, durable shear to cut through wire, staples and other debris.
A specially designed, heavy duty, open bore, cast stainless steel valve body is designed to eliminate the tight cavities that promote the compacting of staples and wire. Instead the wire, staples and debris are sheared, and the pieces fall away. In addition to acting as an effective shear, the hard gate also resists surface damage which preserves packing performance. Special abrasion resistant packing and live loading of the packing follower promote high cycle packing performance. The self-supporting yokes prevent actuator alignment problems and make installationl a snap.
The Fabri-Valve XS150-ULV Urethane Lined Knife Gate Valve provides an economical solution for abrasive and corrosive applications. The XS150-ULV does not discharge process media to the environment. The design utilizes the same superior sealing techniques as the XS150, featuring a robust perimeter seal that provides bi-directional, bubble-tight shutoff. Replaceable FV8000™ urethane liners are added to protect the body from abrasion and corrosion.
The XS150 body halves are machined to accept the removable urethane liners (full port). A triple scraper design is incorporated into the FV8000 liners, which cleans the gate during operation and prevents media build up in chest area. The perimeter seal has shoulders, which mechanically retain (lock) the seal in the seal groove located in the FV8000 liners. The seal groove is specially designed to prevent seal pull-out but also allows the seal to move and prevent overcompression.