Specifications
Bidirectional Knife Gate Valve – Series 770
Size Range
2 – 24″ (50 – 600mm)
Body Materials
CF8, CF8M, CF3M, DI, SAF 2205, SAF 2507, WCB
Pressure Ratings
150psi (10bar) CWP
Stem Materials
304
Body Style
Wafer, Two-Piece Bolted
Gate Materials
304, 316, 317, SAF 2507, SAF 2205,17-4PH, Hastelloy® C, Monel®
Seat Material Temperature Range
EPDM: -65° to 248°F (-54° to 120°C)
Design Standard
Manufacturer Standard
Packing Maximum Temperature
Impregnated PTFE: 450°F (232°C), PTFE/Buna-N: 194°F (90°C), PTFE/Viton®: 392°F (200°C), PTFE/EPDM: 248°F (120°C)
Testing Standard
MSS SP-81
Certifications
Canadian CRN
Face to Face
MSS SP-81
Actuator Options
Handwheel (2 – 14″), Bevel Gear (16 – 24″), Pneumatic, Hydraulic, Electric
Features & Benefits
The Bray Series 770 bidirectional o-ported knife gate valve is designed for severe service applications. The 770’s o-ported gate is in constant contact with the seats, minimizing seat stress and ensuring maximum sealing performance.
The durable ductile iron body is offered in a compact wafer style. When fully open, the valve is full bore, offering no resistance to line media.
