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The valve design has low resistance to the flow of the working medium, is bidirectional and is intended for a wide range of pressures and temperatures of the medium passing through it.
The valve cannot be used as a regulating device and is widely used as a shut-off device in the oil-producing and chemical industries.
Supplied with an actuator upon request, unless otherwise provided by the specification.
A knife gate valve (or simply a knife) is a simple, reliable and widely distributed type of shut-off pipeline fittings.
A centric disc rotary valve with soft seat sealing, structurally created with a thickened polymer coating tightly installed on the internal surface of the body.
The valves are designed as devices for shut-off and regulation of the flow of the working medium and are installed in pipelines of heat-water supply, oil, chemical, paper, pharmaceutical, food and other industries in accordance with the applied materials of the disc and seat seal in a wide temperature range of the working medium.
Features and advantages:
- Simple and compact construction, optimal overall dimensions and light weight of products, low torque, as well as the possibility of quick opening/closing of the disc and simplified flow regulation function in the operating control range of the disc 0–90 by manual or drive mechanism.
- Possibility of design and installation in hard-to-reach places of pipeline networks (wells etc.). Simplified installation/removal in the system, does not require maintenance.
- Complete tightness against leakage air-permeability of the shut-off device in both directions.
- A wide choice of materials of shut-off device elements allows using the valves in various working media, operating conditions and modes.
- The valves can be equipped with electric, pneumatic and hydraulic actuators.
- The tight connection of the wafer valve with the mating flanges of the pipeline is carried out by means of a ring polymer seal (single cuff of the valve).
- Long service life – up to 10,000 open/close cycles of the shut-off device of the valve.
- Possibility of using valves instead of such types of fittings as gate valves, globe valves, plug (through) valves, diaphragm valves, etc.
