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BT – Bi-directional MSS SP-81 knife gate valve

BT – Bi-directional MSS SP-81 knife gate valve

BT (SER.22) model


Bi-directional MSS SP-81 lug type knife gate valve for general industrial and water applications

The BT model knife gate is a bi-directional lug type valve designed according to MSS-SP-81 and TAPPI TIS 405-8 for industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solids in industries such as:

  • Pulp and Paper
  • Power plants
  • Mining
  • Chemical plants
  • Wastewater
  • Food and Beverage
  • etc.

Please contact Orbinox UK for information and availability of categories and zones.



DN 2″/50 to DN 36”/900 (larger diameters on request)

Working pressure

DN 2″/50 to DN 24”/600: 150psi / 10 bar
DN 30″/750: 100psi / 7 bar
DN 36″/900: 100psi / 7 bar

Standard flange connection

ASME B16.5 (class 150)



BT (SER.22) – Bidirectional-MSS SP-81(Imperial / Catalogue)
Installation Operation & Maintenance Manual BT (Manuals)

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