Slurry Control Valve
High Performance Butterfly Valve for Highly Erosive Slurry Control
Size Range: 50nb-500nb
Wafer and Flanged long body design, single offset disc
Bray Controls proudly offers the Series 39 high performance slurry control valve. The Series 39 has been designed to withstand the most highly erosive and abrasive services in alumina refining. It has also been successfully applied to other applications where control of erosive product is required.
The Bray Series 39 control valve is made to the highest standard from technically advanced wear resistant materials such as sintered silicon carbide ceramic, partially stabilized zirconia ceramic and special chrome-molybdenum iron. Therefore, Series 39 is the ultimate product for use on severely erosive slurry and abrasive applications. Components from the patented Series 40 high performance valve are featured in the Series 39. Proven Series 40 parts, such as seals, packing and bearings, and the blow out proof stem design are utilized. Industry standard ISO actuator mounting top works allows for simple, standard on-site actuator fitment.
The Series 39 high performance slurry control valve delivers the highest quality and best value available to the meet the requirements of today's fluid process industry.
A slurry can be loosely defined as any material that is primarily a liquid, but contains more than 10% solids. A slurry can be anything from pure water that contains a small amount of sand, to something like lime mud that is very thick and viscous. Regardless of the makeup, slurries present unique challenges when they must be controlled in a piping system. Valves designed long ago for use on domestic water systems cannot always handle the demands of slurry handling.
Lime slurry, as an example, is often used in pH control. When a valve is shut, the upstream pressure in the line tends to de-water the lime, leaving a dry plug at the point of closure. When the valve is opened again, this plug will block the flow. Quarter-turn valves are were not designed for this type of application, and often compound the problem by packing the lime even tighter when they are operated. Lime will also quickly scale and buildup inside the valve, especially in any crevices or dead spaces that exist. The solids content of a slurry also makes it difficult to achieve a tight seal when closing. The seating area of metal valves can become blocked by or filled with solids, preventing a bubble-tight shutoff.
Pinch Valves from Red Valve were designed specifically to handle even the most difficult slurries. All pinch valves since the original Type A introduced in 1953 feature an elastomer sleeve that is the pressure-containing component of the valve. The resilient walls of the pinch sleeve allow it to resist abrasion, and seal tight around entrapped solids. The flexing action of the sleeve break-up dewater material, and prevent buildup. The full-port opening offers no obstructions and no changes in the direction of flow.
SlurryFlo control valves provide exceptional performance and reliability. The patented gate profile and unique orifice trims are custom designed for controlling any application – from water to extremely abrasive slurries. By directing flow through the center of the valve, SlurryFlo protects the valve’s body and downstream piping from erosion and cavitation.
The SlurryFlo Advantage:
- Centered flow that reduces wear
- Each valve is custom engineered
- Revolutionary gate design
- Unique seat plates
- Hard coatings
- Replaceable wear parts
- Low thrust packing
- Specialized actuation
- Patented design
WEY Valve offers several styles of High Performance Knife Gate valves to meet your needs. We will help you select the correct valve style and configuration for your application based on your process conditions and system needs. Standard materials of construction range from Cast Iron to Titanium. We offer designs for 150 psi CWP (cold working pressure), 300 psi CWP, and up to 1440 psi CWP.
Top features of Wey Slurry Valve:
- 50 Years Proven High Performance Design
- Tightest Shut-off in the Industry
- TRANSVERSE SEAL: Re-Packable under Pressure, Both Sides of Gate, Compensates For Wear
- Wey Valve’s Unique Self-Cleaning Design
- Reduced Chest Maximum 60º Arc on Gate
- Tight Tolerance
- Gate Guided for Full Length of Stroke
- Contoured Bore Promotes Self-Cleaning
- No Flush Ports Required!
- Absolute Shut-off Guarantee!