Rubber Sleeve Knife Gate Valve

Rubber sleeve knife gate valve

This type knife gate valve is a flange valve designed for a wide range of industrial applications. The double-seated design provides bi-directional shut off. The design of the valve body and the two rubber sleeves makes the QS valve suited for use in handling abrasive slurries in industries such as:
Mining
Power plants
Chemical plants
Wastewater treatment etc.

Body:
Flange style welded body, for installation between flanges, with reinforced ribs in larger diameters, providing the body with extra strength. Internal body design allows the gate to be fully guided. It is equipped with two machined lateral mouths where the sleeves fit perfectly. The grease nipples allow the gate to be lubricated, thus enhancing its capacity to slide between the sleeves. Additionally, the design allows draining through the lower part, where a cover or a bottom splash guard can be installed.

Gate:
Made of stainless steel, polished on both sides, and of rectangular shape, the gate is machined to an edge. As well as reducing friction and damage to the seats, this design allows it to cut perfectly through the fluid. The material can be changed upon request, thus allowing greater working pressures.

Rubber sleeves:
The seat is made up of two highly resistant, long-lasting sleeves, made of natural rubber with a metallic core. Its highly research and patented hollow design allows for maximum flexibility on passing through the gate, minimising the effort necessary for its operation.
The two sleeves are in permanent contact with each other, so that there is total flow. There are no seat cavities which may cause build-up, and the fluid does not come into contact with the metallic parts of the valve. This design allows for easy replacement of damaged sleeves.