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Bidirectional Knife Gate Valve Slurry Valve - China Suppliers & Factory for DN65-DN300 Manual Valves
Description
Designed specifically for tough industrial applications involving slurry, pulp, powder, and wastewater, the Knife Gate Valve features a compact structure and a sharp-edged gate that can slice through thick or solids-laden media. This makes it well suited for sectors such as mining, paper, chemical processing, and sewage treatment.
Built with a one-piece body, a corrosion-resistant coating, and a blade made of stainless steel or alloy, this knife gate valve is engineered for long‑term durability. Its unidirectional shut‑off design minimizes pressure loss while maintaining a reliable seal, even under demanding flow conditions. The non‑clogging construction and low operating torque make it an excellent choice for systems where maintenance access is limited.
A range of actuation options is available—including manual handwheel, pneumatic, and electric—allowing the valve to be configured for either remote or manual operation. It supports flange mounting using wafer or lug‑type connections, depending on system requirements.
As a trusted valve manufacturer in China, we produce all knife gate valves in accordance with international standards such as DIN and ISO. Each valve is pressure‑tested and inspected before shipment to ensure performance and reliability.
Choose our knife gate valve to achieve smooth, safe, and efficient flow control in harsh industrial environments. It provides a dependable solution for handling abrasive and viscous media with ease.
Built with a one-piece body, a corrosion-resistant coating, and a blade made of stainless steel or alloy, this knife gate valve is engineered for long‑term durability. Its unidirectional shut‑off design minimizes pressure loss while maintaining a reliable seal, even under demanding flow conditions. The non‑clogging construction and low operating torque make it an excellent choice for systems where maintenance access is limited.
A range of actuation options is available—including manual handwheel, pneumatic, and electric—allowing the valve to be configured for either remote or manual operation. It supports flange mounting using wafer or lug‑type connections, depending on system requirements.
As a trusted valve manufacturer in China, we produce all knife gate valves in accordance with international standards such as DIN and ISO. Each valve is pressure‑tested and inspected before shipment to ensure performance and reliability.
Choose our knife gate valve to achieve smooth, safe, and efficient flow control in harsh industrial environments. It provides a dependable solution for handling abrasive and viscous media with ease.
⚙️
Sharp-Edge Gate Design
Slices through slurry, pulp, and solids-laden media with ease.
🛡️
Corrosion-Resistant Build
One-piece body with stainless steel or alloy blade for long-term durability.
🔧
Multiple Actuation Options
Manual handwheel, pneumatic, or electric — remote or on-site operation.
✅
DIN & ISO Compliant
Manufactured to international standards; pressure-tested before shipment.
💧
Non-Clogging Construction
Low operating torque; ideal for limited-access maintenance environments.
🔩
Flexible Mounting
Wafer or lug-type flange connections to suit various system requirements.
Standard Materials Of Main Parts
| NO | PART NAME | MATERIAL |
| 1 | Body | Ductile Iron |
| 2 | Oring | NBR |
| 3 | Sealing | NBR/EPDM |
| 4 | Disc | 316 |
| 5 | Packing | PTFE |
| 6 | Gland | WCB |
| 7 | Bolt | 201 |
| 8 | Nut/Bolt | 201 |
| 9 | Pin | 201 |
| 10 | Split pin | 200 |
| 11 | Yoke | A3 |
| 12 | Stem | 2cr13 |
| 13 | Yoke Head | WCB |
| 14 | Stem Nut | Brass |
| 15 | Bearing | Zchsnsb10-6 |
| 16 | Yoke head cao | WCB |
| 17 | Nut | 201 |
| 18 | Handwheel | Ductile Iron |
DIMENSIONS: (mm)
| DN | SIZE | ||||||||
| L | D | D1 | D2 | D0 | N-Th | d | H | H1 | |
| 65 | 48 | 185 | 145 | 118 | 180 | 4-M16 | Ø18 | 335 | 415 |
| 80 | 51 | 200 | 160 | 132 | 220 | 8-M16 | Ø18 | 360 | 455 |
| 100 | 51 | 220 | 180 | 156 | 240 | 8-M16 | Ø18 | 400 | 515 |
| 125 | 57 | 250 | 210 | 184 | 240 | 8-M16 | Ø18 | 455 | 595 |
| 150 | 57 | 285 | 240 | 212 | 280 | 8-M20 | Ø23 | 510 | 675 |
| 200 | 60 | 340 | 295 | 266 | 300 | 12-M20 | Ø23 | 585 | 805 |
| 250 | 70 | 405 | 355 | 319 | 320 | 12-M24 | Ø27 | 695 | 965 |
| 300 | 76 | 460 | 410 | 370 | 320 | 12-M24 | Ø27 | 765 | 1085 |
Frequently Asked Questions
Q
What types of media is the Knife Gate Valve suitable for?
The Knife Gate Valve is specifically designed for handling slurry, pulp, powder, and wastewater. Its sharp-edged gate can effectively cut through thick or solids-laden media, making it ideal for mining, paper processing, chemical, and sewage treatment industries.
Q
What actuation options are available for this valve?
The knife gate valve is available with manual handwheel, pneumatic, and electric actuation options. This flexibility allows it to be configured for both remote-controlled and manual on-site operation depending on your system requirements.
Q
What international standards does this knife gate valve comply with?
Our knife gate valves are manufactured in accordance with international standards including DIN and ISO. Each valve undergoes rigorous pressure testing and quality inspection before shipment to ensure consistent performance and reliability.
Q
What materials are used for the body and blade of the valve?
The valve body is made from Ductile Iron with a corrosion-resistant coating, while the disc (blade) is made from 316 stainless steel. The stem is manufactured from 2Cr13 stainless steel, and the sealing components use NBR or EPDM materials for chemical compatibility.
Q
What flange connection types are supported?
The knife gate valve supports both wafer-type and lug-type flange connections. This allows it to be integrated into a wide range of pipeline systems with different installation requirements.
Q
What size range is available for this knife gate valve?
The knife gate valve is available in sizes from DN65 to DN300 (and beyond upon request). Each size has specific dimensional specifications for face-to-face length, flange diameter, bolt circle, and overall height to suit different pipeline configurations.