Robust Knife Gate Valve with Flexible Elastomer Seat, Tested for Reliability and Long-Term Durability
The Bray Series 740 Bidirectional Knife Gate Valve showcases advanced industrial valve technology, featuring a robust one-piece, cast body design for optimal performance across diverse applications. Its replaceable soft seat ensures resilience durability and adaptability for automated processes, facilitating precise on/off operations.The one-piece cast body seamlessly integrates with a flexible wire-reinforced elastomer seat, delivering bidirectional zero leakage shutoff in various industrial settings. With CRN accreditation, PED Category I Module A compliance, and AWWA C520 certification, the Series 740 exceeds industry standards. Rigorous testing, including shell and seat tests per MSS SP-151, validates its reliability, reinforced by factory cycle tests and a Certificate of Design Conformance.The mechanically and geometrically retained steel-reinforced elastomer seat guarantees bidirectional zero leakage shutoff, enhancing operational efficiency across industries such as Pulp & Paper, Power, Wastewater, Chemical, and Ethanol.The Bray Series 740 Knife Gate valve is known for its reliability, versatility, and superior performance, making it the preferred solution for demanding industrial applications worldwide.
Specification / Detail
| 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) |
| Design Standard | MSS SP81 |
| 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 |
| Face to Face | MSS SP81 |
| 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 |

