Product Overview
Designed for high-pressure slurry with Bray SlurryShield technology
Advanced SlurryShield Technology for Enhanced Durability and Performance
The Bray Series 767 knife gate valve is designed for high-pressure slurry applications. Equipped with advanced Bray SlurryShield technology, it excels in abrasive and corrosive industrial environments, ensuring optimal performance. The body is constructed from durable WCB castings for excellent durability and extended service life. Its wafer-style bolted body design facilitates easy installation and maintenance while maintaining high performance standards. The Series 767 features a push-through gate design that ensures bidirectional zero-leakage sealing, making it ideal for industries such as mining, pulp and paper, general industry, power, and cement. The two elastomeric sleeves are replaceable components, extending the service life of the body, gate, and bonnet. Maintenance can be performed in the field without sending the asset for repair, avoiding extended downtime. The valve is equipped with natural rubber or EPDM sleeves for wear and corrosion resistance. A variety of gate materials are available, including 316 stainless steel, 2205 duplex stainless steel, and 17-4 stainless steel, to meet different pressure class requirements.
Technical Specifications
| Item | Parameter |
|---|---|
| Size Range | NPS 3 to 36 / DN 80 to 900 |
| Body Material | Carbon Steel (WCB) Other materials available upon request |
| Maximum Allowable Operating Pressure | 300psi (20 bar) 450psi (31 bar) 740psi (51 bar) |
| Stem Material | 304 Stainless Steel |
| Body Type | Two-Piece Bolted: Flanged |
| Gate Material | 304, 316, 317 Stainless Steel, SAF 2507, SAF 2205, 17-4PH, Hastelloy® C, Monel® |
| Seat Material Temperature Range | Natural Rubber: 165ºF / 74°C EPDM: 248°F / 120°C |
| Design Standard | Manufacturer Standard |
| Test Standard | Manufacturer Standard |
| Certifications | ATEX, CRN, PED, PE(S)R, TR CU, UA TR |
| Face-to-Face Dimension | Industry Standard |
| Actuator Options | Handwheel, Bevel Gear, Pneumatic, Hydraulic, Electric |
| Applications | Slurry |
Features and Benefits
A Stem Cover
Standard protective stem guard enhances life cycle in hazardous environments.
B Sleeve
J-ring steel-reinforced elastomeric sleeve provides energized bidirectional zero-leakage sealing. Retaining ring included as standard across the full size range.
C Sleeve Contact
In the open position, the energized sleeve protects all metal parts from direct contact with flowing process media.
D Gate
Available in a variety of corrosion-resistant alloys for the rugged gate, selectable based on application requirements.
E Unrestricted Flow Path
Full-port design provides an unobstructed flow path, extending sleeve service life and minimizing valve pressure drop.
F Push-Through Gate
Ample push-through clearance supports full gate closure.
G Body
Two-piece bolted flanged body is easy to maintain, drilled and tapped to ASME CL300 flange standards. Other drilling options available upon request.
H Bottom Flush Plate
Optional bottom flush plate with threaded port for safe media discharge and easy wash water connection.