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blog details: Specialityvalve is a leading and reputed Knife gate valve manufacturer in India. A Knife gate valve in used in many processing plants and industries. It is very import to know that this type of valves have low-pressure restrictions. In industries like pharmaceutical, paint and printers where thick fluids are required such types of fluids can easily glide through the seals with less to no interference. A knife gate valve is a piece of equipment that uses a blade to cut through clogs in heavy liquids. What is a knife gate valve, and how does it work? Knife gate valves are primarily used for on-off and isolation functions in systems with a high suspended solids concentration. Knife gate valves are particularly useful when dealing with slurry, viscous, corrosive, or abrasive fluids. The valves have a modest pressure drop in the fully open position, are simple to operate, have a light weight, and are cost effective. Knife gate valves are utilized in a variety of applications: Knife gate valves, which often have a sharpened blade to cut through heavy liquids, are designed to work in some of the hardest settings. They're particularly useful in wastewater applications where corrosion is a major concern. So, in addition to the valve design optimized for slurry media, having a knife made of acid-proof stainless steel is advantageous since it is less prone to corrosion damage and so requires less frequent maintenance or even replacement. Knife gate valves should only be used for applications that require a completely open or completely closed position, and should not be used to regulate flow unless they are specifically intended for that purpose. A vibration occurs whenever fluid is pressed against a partially closed gate, progressively eroding the disc and seat. Furthermore, the knife gate valves are designed to open and close slowly to protect against the effects of water hammer. What makes “knife gate valves” different from “gate valves”? -Both wedge type and knife type gate valves are primarily intended for on-off applications in which the valve is entirely opened or closed. It's not a good idea to utilize either of these to control flow because when fluid pushes against a partially closed gate, vibration and cavitation develop, causing damage to the seat and body. Both types of valves are also intended to open and close slowly in order to avoid water hammer. -The knife gate valve frequently includes a sharpened disc to better cut through slurry/viscous material, which is one of the differences between the gate and knife gate valves. In addition, compared to a gate valve, which is dimensionally wider, the knife gate valve has a short face-to-face length. -As a result, as compared to a gate valve, a knife gate valve is much lighter. These are the primary differences, as well as two of the knife gate valve's most significant advantages. Knife gate valves are used in wastewater treatment plants, chemical plants, mining, cement plants, and a variety of other industrial applications, whereas gate valves are used in drinking water mains, distribution networks, and pump stations. Both types can be utilized in the following cases: • Slurries. • Heaviest oils. • Viscose fluids that aren't flammable. • Wastewater. • Water that is free of contaminants. Types of Knife Gate Valves available: • AWWA knife gate valve. • Slurry knife gate valve. • Flanged knife gate valve. • Bi directional knife gate valve. • Unidirectional knife gate valve. Advantages of Knife Gate Valves: • Since their blades can quickly cut through dense liquids, they are useful in slurry applications. • As industries need large machines and equipment so Knife Gate valves are available in those size. Industries that use Knife Gate Valve: • Oil industry. • Chemical plants. • Waste water treatment plants. • Mining. • Cement plants. Description: • Body material – Cast iron, Cast Steel, Ductile Iron, Stainless Steel [SS316, SS304, SS316L, SS904L, CF8, CF8M, F304, F316, F31L, F51, F3, F55, F91], WCB, WC6, SS304, SS316, DUPLEX STEEL • Size – 2” – 48” • Class- 150 – 300, PN 6 – PN 25 • Ends- Wafer knife gate valve, Flanged knife gate valve, Lug knife gate valve. • Operation- Pneumatic actuated, Electric actuated. At Specialityvalve, we guarantee high performance and reliability in our valves. To know more details, visit our website:


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