Bidirectional Knife Gate Valve Series 755

Bidirectional Knife Gate Valve

Series 755

Size Range
2 - 24" (50 - 750mm)
Pressure Ratings
150psi (10bar), 240psi (16bar), 300psi (20bar)
Body Style
Wafer, Two-Piece Bolted


Bidirectional Knife Gate Valve - Series 755

Size Range
2 - 24" (50 - 750mm)
Body Materials
CF8 Stainless Steel, CF8M Stainless Steel, CF3M Stainless Steel, DI, SAF 2205 Duplex, SAF 2507 Duplex, WCB Carbon Steel
Pressure Ratings
150psi (10bar), 240psi (16bar), 300psi (20bar)
Stem Materials
304 Stainless Steel
Body Style
Wafer, Two-Piece Bolted
Gate Materials
304, 316, 317, 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
Packing Maximum Temperature
PTFE/Buna-N: 194°F (90°C)
PTFE/Viton®: 392°F (200°C)
PTFE/EPDM: 248°F (120°C)
Testing Standard
Liner Maximum Temperature
176°F (80°C)
Canadian CRN
Face to Face
MSS SP-81 (150psi, 240psi models)
Actuator Options
Handwheel (2 - 10"), Bevel Gear (12 - 24"), Pneumatic, Hydraulic, Electric

Features & Benefits

The Bray Series 755 bidirectional knife gate valve features a polyurethane liner making it an economical solution for abrasive applications. Utilizing the same robust steel reinforced perimeter seat as the Series 752 enables bidirectional zero leakage shutoff.

The replaceable steel reinforced perimeter seat is mechanically retained between both halves of the two piece bolted body providing unsurpassed performance in the most demanding applications.



  • 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
  • Unrestricted flow path with minimal pressure drop achieved through full port valve design
  • Replaceable steel reinforced elastomer perimeter seat ensures bidirectional zero leakage shutoff
  • Two piece bolted body for easy maintenance and seat replacement
  • Polyurethane liner bonded to both halves of the body (755P) completely protects valve body from media
  • Polyurethane bore liner provides total protection from abrasive media

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