Flange Knife Gate Valve

Design stanard: MSS SP-81, JB/T8691
Flange connection: ANSI B16.5, JIS10K, PN10, PN16
Body material: WCB, CF8, CF8M, CF3M, SS2205, SS904L, SS2507
Disk / stem material: SS201,SS304,SS304L,SS316,SS316L,SS2205, SS904L, SS2507
Size range: DN50(2'')-DN1000(40'')
Actuator: handle wheel, lever, gear, hydraulic, electrical, Pneumaitc cylinder
Double acting cylinder or spring return cylinder, switches, limit switches,
positioner, solenoid valve, air filter etc. fail safe system
Seat material: Metal seated, NBR, EPDM, PTFE, RPTFE, VITON etc.
customized design on request:
Deflection cone, flush ports

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Flange knife gate valve is a commonly used manual shut-off valve that can be used in pipelines for conveying different types of fluids. It is known for its simple structure, flexible operation, excellent sealing performance and ability to quickly shut off pipelines for efficient cutting.

When maintaining the flange knife gate valve, the following points should be noted:

Regularly check the valve body and valve seat sealing surfaces. If there is any damage or cracking, it should be replaced in time.

Check the sealing gasket and replace if necessary. Be sure to use a gasket with the correct specification and material for the intended use.
The valve should be regularly cleaned and lubricated with rust preventive oil to prolong its service life.
During use, the operation handle should be protected from excessive force or damage that may cause the valve to fail to operate properly.
If the valve is not in use for an extended period, it should be closed and covered with a protective cover to ensure a dry and dust-free environment.
In summary, regular inspection and timely replacement of damaged parts are essential for maintaining the flange knife gate valve's proper functionality and prolonging its lifespan.