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Stainless Steel Knife Gate Valve 2-24 | China Suppliers & Factory for Industrial Flow Control
Product Details
Pneumatic knife gate valves provide reliable and efficient flow control since they are constructed for throttling and on-off service. They are available in various designs, including wafer and flanged versions, with NBR, EPDM or metal seat ring seals. They can be controlled pneumatically, contributing to automation.
Key Features
Designed for Tough Media
Automatic Control
Leak-Proof Sealing
Corrosion-Proof
Parts of Pneumatic Knife Gate Valve
- 1. Valve Body: It is constructed of carbon steel, cast iron, or stainless steel.
- 2. Knife Gate: A gate having a cutting edge which can slice through solids and slurries.
- 3. Actuator: Compressed air operates valves automatically through pneumatic actuators.
- 4. Seals: Leak-proof performance is achieved through seals and packing.
- 5. Stem & Yoke: Enables movement by joining the actuator with the gate.
Working Mechanism
- 1. A pneumatic actuator controls the opening and closing of the knife gate valve.
- 2. The actuator uses compressed air to regulate the raising and lowering of the knife gate, thereby controlling the flow of fluid or slurry.
- 3. The sharp edge of the knife gate can effectively cut through thick materials, ensuring smooth fluid flow and preventing blockages.
Specification
| No. | Parts | Materials |
| 1 | Body | Stainless Steel |
| 2 | Disc | SS304 |
| 3 | Bolt | ASTM A193 B7 |
| 4 | Wedge nut | ASTM A194 2H |
| 5 | Stem | Stainless Steel |
Dimensions
| Size (In) | L | D1 | H | d | Bolt Size | No. Bolts | Weight (kg) |
| 2 | 42 | 114 | 470 | 45 | M16 | 4 | 7 |
| 2.5 | 43 | 127 | 501 | 60 | M16 | 4 | 8 |
| 3 | 45 | 146 | 550 | 74 | M16 | 4 | 13 |
| 4 | 45 | 178 | 600 | 93 | M16 | 8 | 15 |
| 5 | 52 | 210 | 715 | 116 | M16 | 8 | 23 |
| 6 | 52 | 235 | 795 | 138 | M20 | 8 | 35 |
| 8 | 65 | 292 | 995 | 188 | M20 | 8 | 45 |
| 10 | 70 | 356 | 1150 | 233 | M20 | 12 | 75 |
| 12 | 70 | 406 | 1375 | 281 | M22 | 12 | 115 |
| 14 | 70 | 470 | 1520 | 330 | M22 | 12 | 169 |
Frequently Asked Questions
What is a pneumatic knife gate valve used for?
A pneumatic knife gate valve is used for on-off and throttling flow control in pipelines carrying slurries, thick fluids, powders, or other tough media. It is widely applied in industries such as mining, wastewater treatment, pulp & paper, and chemical processing.
How does a pneumatic knife gate valve work?
The valve is operated by a pneumatic actuator powered by compressed air. When air pressure is applied, the actuator raises or lowers the knife gate to open or close the flow path. The sharp edge of the knife gate cuts through solid or semi-solid materials to ensure reliable sealing.
What materials are available for the valve body?
The valve body can be constructed from carbon steel, cast iron, or stainless steel depending on the application requirements. Stainless steel bodies are recommended for corrosive media or hygienic applications.
What seal options are available for pneumatic knife gate valves?
Pneumatic knife gate valves are available with NBR, EPDM, or metal seat ring seals. The choice of seal material depends on the type of fluid, temperature, and chemical compatibility required by the application.
What sizes are available for this pneumatic knife gate valve?
This valve is available in sizes ranging from 2 inches to 14 inches. Each size has specific dimensional specifications including face-to-face length (L), flange diameter (D1), overall height (H), bore size (d), bolt size, number of bolts, and weight.
Can pneumatic knife gate valves be integrated into automated systems?
Yes. Because they are actuated by compressed air, pneumatic knife gate valves are highly compatible with automated control systems. They can be integrated with solenoid valves, PLCs, and remote control systems for fully automated pipeline management.
Product Packaging
01020304