Knife Gate Valve: Series 740 Bidirectional

Durable, Full-Port Valve with CRN, PED, AWWA Certifications for Critical Industrial Operations

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.

Specifications

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

Downloads

Product Brochure

Knife Gate And Slurry Valves Product Guide

Product Brochure

Series 740 Bidirectional Knife Gate Valve

IOM Manual

Series 740 Bidirectional Knife Gate Valve

Recommended Specs

Series 740 Bidirectional Knife Gate Valve

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.

Bidirectional Polyurethane Lined Knife Gate Valve

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