Series 752 Bidirectional Knife Gate Valve Product Image
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Bidirectional Knife Gate Valve Series 752

Bray Series 752 bidirectional knife gate valve features a two-piece bolted body and steel-reinforced molded peripheral seat for bidirectional zero-leakage sealing, suitable for slurry handling in chemical, mining and power industries

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Product Overview

The perfect solution for industrial slurry handling processes

240 PSI Rated Valve for Demanding Industrial Applications

The Bray Series 752 bidirectional knife gate valve is an engineered solution designed for precise and reliable slurry handling. Its innovative design features a two-piece bolted body and steel-reinforced molded peripheral seat, ensuring bidirectional zero-leakage sealing even under demanding operating conditions. This series offers multiple actuator options, including direct-mount handwheel standard (2”-10”), bevel gear standard (12”-24”), pneumatic, hydraulic, and electric actuators, to meet various operational requirements. Primarily applied in chemical, mining, and power industries, the Series 752 demonstrates excellence in valve technology, delivering outstanding performance, durability, and adaptability.

Technical Specifications

ItemParameter
Size RangeNPS 2 to 24 | DN 50 to 600
Body MaterialCarbon Steel (WCB) | CF8 Stainless Steel
CF3 Stainless Steel | CF3M Stainless Steel | CE3MN
Duplex Steel (SS 2507) ｜ CD3MN Duplex Steel
Maximum Allowable Operating PressureSeries 752: 232 psi | 16 bar
Series 752HP: 290 psi | 20 bar
Stem Material304 Stainless Steel
Body TypeTwo-Piece Bolted (Wafer)
Seat Material Temperature RangeBuna-N: -35°F to 194°F (-37°C to 90°C)
EPDM: -65°F to 248°F (-54°C to 120°C)
Viton®: -15°F to 392°F (-26°C to 200°C)
Gate Material304, 316, 317 Stainless Steel
SAF 2507 Duplex Stainless Steel
SAF 2205 Duplex Stainless Steel
17-4PH Stainless Steel
Hastelloy® C
Monel®
Alloy 20
Design StandardMSS SP81
Gland Packing Max TemperatureFiber-Reinforced PTFE: 232°C / 450°F
PTFE with EPDM Quad Seal: 90°C / 194°F
PTFE with Viton® Quad Seal: 200°C / 392°F
Test StandardMSS SP-151
CertificationsCanada CRN
Face-to-Face DimensionSeries 752: MSS SP-81
Series 752HP: MSS SP-135
Actuator OptionsHandwheel, Bevel Gear, Pneumatic, Hydraulic, Electric

Features and Benefits

Bidirectional Knife Gate Valve Series 752 Features and Benefits

A Topworks

Design supports simple and quick conversion between manual and pneumatic operation. Features a lubricant injection port for continuous, smooth operation with minimal maintenance.*

B Clevis

The clevis design and horizontal bolt retention stabilize the gate, ensuring proper alignment.

C Gland Packing (Standard)

Standard multi-layer square packing provides superior gland sealing.

D Gland Packing (Optional)

Optional energized star-seal packing enhances gland sealing.

E Unrestricted Flow Path

Full-port valve design provides unrestricted flow path for minimal pressure drop.

F Gate

Anti-deflection gate design ensures consistent alignment, providing industry-leading durability.

G Seat

Replaceable steel-reinforced resilient seat ensures bidirectional zero-leakage sealing.

H Body

Two-piece bolted body facilitates easy maintenance and seat replacement.

FAQ

How does the Bray Series 752 bidirectional knife gate valve achieve bidirectional sealing? Is it suitable for slurry media?

The Series 752 uses a replaceable steel-reinforced molded peripheral resilient seat combined with a two-piece bolted body structure, enabling zero-leakage sealing under bidirectional differential pressure. Its full-port flow path reduces media flow resistance and pressure drop, making it suitable for slurry handling processes in chemical, mining, and power industries.

What are the differences between the Series 752 and 752HP in pressure rating and face-to-face dimensions?

The Series 752 has a maximum allowable working pressure of 232 psi (16 bar) with face-to-face dimensions per MSS SP-81. The 752HP series has a maximum allowable working pressure of 290 psi (20 bar) with face-to-face dimensions per MSS SP-135. Selection should confirm the specific model based on pipeline pressure, installation space, and corresponding face-to-face requirements.

What body, gate, and seat material combinations are available for the Bray Series 752?

Body options include carbon steel WCB, CF8, CF3, CF3M, CE3MN stainless steel, SS 2507 duplex, and CD3MN duplex. Gate options include 304, 316, 317 stainless steel, SAF 2507, SAF 2205, 17-4PH, Hastelloy C, Monel, and Alloy 20. Seat options include Buna-N, EPDM, or Viton. Specific combinations should be confirmed based on actual model and application conditions.

How to select the appropriate actuator for the Series 752?

The Series 752 can be configured with handwheel, bevel gear, pneumatic, hydraulic, or electric actuators. NPS 2 to 10 comes standard with direct-mount handwheel, and NPS 12 to 24 comes standard with bevel gear. For remote control, automation interlocking, or specific operation modes, pneumatic, hydraulic, or electric actuators can be selected. The topworks supports quick conversion between manual and pneumatic actuation.

What areas should be focused on during installation and maintenance of the Series 752 knife gate valve?

During installation, ensure proper gate-to-clevis alignment to enable the anti-deflection gate and horizontal bolt retention function. During maintenance, lubrication can be performed through the topworks lubrication injection port. The two-piece bolted body facilitates access and seat replacement. Packing options include standard multi-layer square packing or optional energized star seal packing. Specific maintenance requirements should be confirmed based on media, temperature, and actual application conditions.

Documents

Product Brochure - Bidirectional Knife Gate Valve Series 752Product information · EnglishProduct Brochure - Knife Gate Valve and Slurry Valve Product GuideProduct information · EnglishProduct Guide - Válvulas de Cuchilla - Guía de ProductosProduct information · EnglishIOM Manual - Bidirectional Peripheral Seat Knife Gate Valve Series 752Manual · English

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