Project Description

Pneumatic Through Conduit Knife Gate Valve


Sizes Range:       

DN 50~600mm  NPS 2”-24”

(Large diameter on request)

Sealing Options: 

NBR:90°C     EPDM: 120°C

Viton: 200°C   PTFE: 200°C

Metal seal :304/316+Satellite

Max Working pressure:

DN50~DN250: 10Bar  NPS2~NPS10:150Psi

DN300~DN450: 7Bar  NPS12~NPS18:90Psi

DN500~DN600: 4Bar  NPS20~NPS24: 60Psi

Face to Face:  MSS SP-81

Flange connection: 

GB/T 9113.1, JB/T 79.1,HG 20592,

ASME B 16.5, EN1092-1 (other connections on request)

Operation Option:

Handwheel/Bevel Gear


Certificates: CE,ISO9001,TS


Pulp & Paper / Water & Waster Water /Mining / Metallurgy/

Petrochemical /Printing & Dying / Pharmacy/ Beverage & Food

The Pneumatic Through Conduit Knife Gate Valve is a bi-directional wafer knife gate valve. It is mainly designed for highly concentrated flow media. With a through going O-port plate, this valve provides a stable and safe shut-off performance without clogging. With double-seat design, it can handle flow in both directions.


  • Integral body or split body design according to customer’s request.
  • Packing at both body sides eliminates leakage to surrounding.


  • The slide plate is an integral part with an O-port. It can easily cut through the media during on-off operation.
  • The slide plate is ground smoothly on both sides to eliminate adhesion and clogging.
  • On request, the thickness of the knife gate valves gate can be increased for higher operating pressures.


  • With seats on both sides, valve can handle flow in both directions.
  • Side-entry design makes seat replaceable, save cost for maintenance.
  • The seat retainer prevents flow from flushing seat.

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