Bidirectional Knife Gate Valve Series 740 Bray International https://www.bray.com/images/default-source/products/knifegate/knifegate-740/vaas740cover01_02thumbnail.webp?sfvrsn=47f63dff_5

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)
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

Features & Benefits

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.

 

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
Bidirectional Knife Gate Valve Series 740 Features

  • A. Topworks

    Topworks designed for easy, quick conversion between manual and pneumatic actuation. Manual valves include a lubricant injection port for continuous, smooth operation with minimal maintenance.

  • B. Clevis

    Clevis design and horizontal bolting stabilizes gate ensuring proper alignment.

  • C. Packing (standard)

    Standard multi-layer square packing provides exceptional gland sealing.

  • D. Packing (optional)

    Optional energized quad seal packing for enhanced gland sealing.

  • E. Chest Liner / Anti Extrusion Ring

    Chest liner for sizes up to 12" and PTFE anti- extrusion ring for sizes 14" and up.

  • F. Port

    Unrestricted flow path with minimal pressure drop achieved through full port valve design.

  • G. Gate

    Gate design ensures consistent alignment throughout the length of the stroke.

  • H. Seat

    Mechanically retained steel reinforced elastomer seat ensures bidirectional zero leakage shutoff.

  • I. Yoke

    Cast yoke superstructure ensures robustness in valve design for different operators/orientation.

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