Originally designed for the pulp and paper industry, knife gate valves perform exactly at their name implies. Stringy pulp would impinge between the wedge and sand seat of a normal gate valve to prevent flow shut-off. Knife gate valves feature a sharp edge to cut through the pulp and seal, a useful attribute which has seen this shut-off valve type become invaluable to applications which either deal with viscous fluids or ones which have a similar risk of impingement.
Knife gates are cheap, easy to actuate and light. They are advantageous in applications involving viscous fluids such as sludge and slurry because their blades can cut through thick liquids with ease. As such, they are generally specified in larger sizes for the handling of thicker flows in demanding applications. Despite this, knife gates are known for their low-pressure limitations. As such, this makes them a less desirable shut-off valve for applications which require cleanliness or optimal hygienic conditions.
Buy gate and knife gate valves from BM Engineering Supplies
As an established and trusted valve distributor to the Scottish process industry, BM Engineering Supplies stocks a comprehensive range of both thread and socket globe valves and knife gate valves. For gate valves, BM Engineering is the Scottish partner for one of the UK’s market-leading valve wholesaler, Leengate Valves. Their range of gate valves is approved to ISO 9001 standards and other relevant industry governing bodies. While for knife gate valves, BM Engineering partners with Orbinox UK, one of the world’s leading manufacturers of knife gate valves.