Knife Gate Valves

The manual knife gate valve is a valve type that uses a gate or wedge shaped disc to control the flow of liquid through a pipeline. The gate is operated by hand, turning a lever or handwheel that raises or lowers it to open or close the valve. The gate has a sharp edge — hence the name "knife gate" — which lets it cut through solids carried in the liquid. This valve type is widely used where quick shut-off is needed, such as irrigation systems, waste water treatment plants and industrial process lines. It is also common wherever solids are expected in the fluid, because the sharp edge cuts through them and still seals.

Manual Knife Gate Valve — Technical Data

• Body: GGG-40
• Knife: AISI 304, AISI 316
• Seat ring: EPDM, NBR, Viton, PTFE
• Working temperature: -10 °C / +110 °C
• Working pressure: 16 bar
• Pressure class: PN16

Manual Knife Gate Valve — General Features

• Sealing is unidirectional, so the installation direction must be observed.
• It can be installed at the end of a line, between two flanges or against a single counter flange. PN10 flange drilling is available.
• The gate seal can be replaced in the line.
• The top flange suits actuator mounting.
• The EPDM rubber seat is seated inside the body.
• Handwheel, pneumatic cylinder, electric actuator and gearbox versions are available.

Manual Knife Gate Valve — Fields of Use

• Slurries
• Waste, hot and cold water
• Plant installations
• Water treatment plants
• Pumping stations
• Tanks
• Sea water applications
• Power plants
• Industrial applications