If you’re looking for a valve that can handle industrial service applications, then the Knife gate might be just what you need. It’s a BI-DIRECTIONAL semi lug type & flange type valve that’s been designed according to the MSS-SP-81 standard. The Knife gate has a unique body and seat design that’s specifically meant to prevent clogging and ensure a reliable shut-off, even when there are suspended solids present. This makes it an ideal choice for industries where dealing with solids is a common occurrence. With the Knife gate, you can rest assured that you’re getting a valve that’s built to handle the toughest conditions and keep your operations running smoothly.
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Standard flange connection:
| PART | STAINLESS STEEL LIST: |
|---|---|
| Body | CAST IRON | S.G. IRON | DI | CAST STEEL | SS 304 | SS 316 | SS 304L | SS 316L | WC6 |WC9 |
| Knife Plate | WCB | AISI 304 | AISI 316 | SS 304L | SS 316L |
| Seals | PTFE |
| Seat | NITRILE | BUNA N | EPDM | VITON | METAL TO METAL |
| End Conn. | Wafer Lugged | Water Type |
| Size Range | 25 MM to 600 MM |
| Type | Bi-Directional |
Allied Valves India is a leading Bi Directional Knife Edge Gate Valve Manufacturer and Supplier in Ahmedabad, Gujarat. We serve industries like pulp & paper, wastewater treatment, mining, and chemical processing across India.
A Bi Directional Knife Edge Gate Valve is an industrial isolation valve built to handle slurry, pulp, and solid-laden flow in either direction. Manufactured as per the MSS-SP-81 standard, it’s available in semi-lug and flange-type body designs. Its sharp knife-edge gate cuts through thick or fibrous media as it closes, preventing clogging and ensuring a tight, reliable shut-off — even with suspended solids in the line. Explore our full Knife Edge Gate Valve range to compare models.
Used across pulp & paper, wastewater treatment, power plants, food & beverage, mining, steel plants, chemical plants, pharma, and general slurry applications — anywhere solids or reverse flow make standard valves unreliable.
When open, the gate retracts fully for unrestricted flow. To close, the sharp gate lowers vertically, cutting through solids as it descends, then seats firmly against the PTFE seal for leak-proof closure — reliably in either flow direction. Can be operated manually or with pneumatic, electric, or cylinder actuators.
Allied Valves India manufactures every Bi Directional Knife Edge Gate Valve to MSS-SP-81 standards at our Ahmedabad facility, using premium materials and offering full customization in size, flange type, and sealing. Backed by years of experience across critical process industries, we deliver reliability, technical guidance, and on-time delivery.
Explore our Knife Edge Gate Valve range, or Get a Quote today.
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