Bidirectional Knife Gate Valve
Series 740
Size Range
NPS 2 to 36 / DN 50 to 900
Maximum Allowable Operating Pressure
NPS 2 to 24: 150psi / DN 50 to 600: 10bar
NPS 30 to 36: 100psi / DN 750 to 900: 7bar
Body Style
Single Piece, Lug
Specifications
Bidirectional Knife Gate Valve - Series 740
Size Range
NPS 2 to 36 / DN 50 to 900
Body Materials
Carbon Steel (WCB), CF8 Stainless Steel, CF8M Stainless Steel, CF3M Stainless Steel, SAF 2205, SAF 2507
Maximum Allowable Operating Pressure
NPS 2 to 24: 150psi / DN 50 to 600: 10bar
NPS 30 to 36: 100psi / DN 750 to 900: 7bar
Stem Materials
304 Stainless Steel
Body Style
Single Piece, Lug
Gate Materials
304, 316, 317 Stainless Steel, SAF 2507, SAF 2205,17-4PH, Hastelloy® C, Monel®
Seat Material Temperature Range
Buna-N: -34 to 194°F (-36 to 90°C),
EPDM: -65 to 248°F (-54 to 120°C)
Viton®: -15 to 392°F (-26 to 200°C)
Packing Maximum Temperature
PTFE: 500°F (260°C),
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 SP151
Certifications
ATEX, AWWA C520 (2019), CRN, PED, PE(S)R, TR CU, UA TR
Actuator Options
Handwheel, Bevel Gear, Pneumatic, Hydraulic, Electric
Applications
Bleach Stock, Brown Stock Washers Pump Isolation, Evaporators Black Liquor, Paper Stock, Fly Ash Pneumatic Conveyance Crossover Valve, RAS Return Activated Sludge, Pump & Equipment Isolation, Process Fluids, Pump & Isolation Tank
The Series 740 bidirectional knife gate valve provides repeatable bidirectional shutoff in a rugged, single piece cast body. Featuring a replaceable steel-reinforced elastomer seat for enhanced sealing, the Bray Series 740 gate valve is easily automated for on/off applications.
Features
- Designed for easy, quick conversion between manual and pneumatic actuation. Featuring a lubricant injection port for continuous, smooth operation with minimal maintenance.
- Clevis design and horizontal bolting stabilizes gate ensuring proper alignment.
- Standard multi-layer square packing provides exceptional gland sealing.
- Optional energized quad seal packing for enhanced gland sealing.
- Wiper/Anti Extrusion Ring minimizes the gap between the body and the gate
- Unrestricted flow path with minimal pressure drop achieved through full port valve design
- Deflection resistant gate design ensures consistent alignment for industry leading durability
- Replaceable flexible wire reinforced elastomer seat ensures bidirectional zero leakage shutoff
