Bray’s slurry knife gate valves are specifically engineered to deliver reliable isolation in the most demanding slurry applications, including mining, tailings, pulp & paper, and other abrasive processes. Designed for handling high solids content, these valves feature a full-port, push-through gate design that ensures unobstructed flow, minimizes pressure drop, and reduces the risk of clogging or buildup.
At the core of their performance is Bray’s innovative SlurryShield® technology — a proprietary system that combines advanced elastomer engineering, precision molding processes, and a fully encapsulated J-ring design. This technology creates energized sleeves that provide true bidirectional, zero-leakage shutoff while shielding all metal components from direct contact with the slurry, significantly extending valve life and reducing maintenance requirements.
The SlurryShield® system also prevents media buildup and enables a self-cleaning action during operation, eliminating common failure modes such as seat damage, valve jamming, or unsafe manual intervention. Its controlled material composition and engineered elastomer memory enhance resilience, sealing performance, and durability under high pressure and highly abrasive conditions.
With robust construction, replaceable wear components, and field-proven reliability, Bray slurry knife gate valves are a trusted solution for maximizing uptime, improving safety, and optimizing total cost of ownership in critical process applications.
Bray’s SlurryShield® portfolio includes three engineered slurry knife gate valve series—762, 767, and 768—designed to provide reliable bidirectional isolation in abrasive and demanding slurry applications. Across the range, these valves combine twin elastomer sleeves, push-through gate design, and zero-leakage shutoff performance to help reduce media buildup, protect internal components, and extend service life in severe process conditions.
Bray’s heavy-duty slurry valve for demanding industrial service. It features a durable ductile iron body, a two-piece bolted flange style, and a full-bore design that minimizes resistance to line media. The Series 762 is designed to deliver reliable performance and easy maintenance in applications across mining, power, pulp & paper, alumina, chemical, and cement industries.
The Series 767 is specifically engineered for high-pressure slurry applications. Built with a cast WCB body and designed for higher pressure ratings, it combines Bray SlurryShield® technology with a robust gate, replaceable elastomer sleeves, and a full-port flow path to deliver bidirectional zero-leakage shutoff in abrasive and corrosive environments.
The Series 768 is an engineered solution for heavy-duty slurry handling applications where a compact wafer face-to-face dimension is an advantage. Equipped with Bray SlurryShield® technology, it incorporates twin elastomer sleeves, a self-cleaning gate, and a full-port design, while also allowing onsite sleeve replacement for faster return to service and long operating life.
What unites all three series is Bray’s advanced SlurryShield® technology. This proprietary system uses engineered elastomer sleeves and a fully encapsulated J-ring design to improve memory return, support zero-leakage isolation, shield metal components from direct contact with the media, and help reduce discharge compared with conventional slurry valve designs. The result is a portfolio built to improve reliability, simplify maintenance, and support longer service life in severe slurry applications.
Bray provides a broad portfolio of flow control solutions for the mining industry, engineered for the most demanding points of the process—from grinding and classification to tailings transport, desalination, chemical services, and other critical applications where abrasion, corrosion, pressure, and uptime are constant challenges.
Our mining offering includes reliable and durable products for both isolation and control, supported by global engineering expertise, regional focus, and local presence. Designed to perform in high abrasive wear environments, Bray solutions help protect operations, extend asset life, support maintenance strategies, and reduce total cost of ownership over the life of the mine.
For severe slurry services, Bray’s SlurryShield® technology brings a differentiated approach to valve performance. Developed for real operating conditions in slurry lines, mineral pulp transport, hydrocyclones, and tailings handling, SlurryShield® is designed to protect wear-exposed areas, reduce premature failures, improve process reliability, and minimize unplanned downtime in highly abrasive applications.
Bray’s mining solutions are further strengthened by automation capabilities that integrate valve, actuator, and control into solutions designed for safer and more precise operation in demanding environments. This supports customers moving toward more automated, connected, and operationally resilient mining systems.
With a wide variety of products, application-specific engineering, and experience supporting critical mining operations, Bray serves as a single-source flow control partner for customers seeking long-term reliability, performance, and practical solutions in severe service mining applications.
