PZ673 Pneumatic knife gate valve
The Pneumatic Knife Gate Valve is designed for slurry, pulp, wastewater, and solid-laden fluids. Its pneumatic actuator ensures rapid, low-torque operation and precise on/off control. Constructed from wear- and corrosion-resistant materials, the valve delivers reliable sealing, long service life, and minimal maintenance for mining, chemical, water treatment, and pulp industries.
Pneumatic knife gate valve
Pneumatic Knife Gate Valves combine a sharp knife-edge gate with pneumatic actuation to achieve automated operation of abrasive, viscous, and fibrous media pipelines. Suitable for medium to large diameters, the valve prevents clogging, reduces operating torque, and ensures tight shut-off.
The valve supports flanged, wafer, and lug connections. Optional manual override and actuator configurations allow seamless integration with industrial automation systems (PLC, DCS, SCADA). OEM customization includes body and gate materials, seat types, pneumatic actuator specifications, and coatings for severe conditions.
Pneumatic knife gate valve
| Parameter | Specification |
|---|---|
| Product Name | Pneumatic Knife Gate Valve |
| Nominal Size | DN50 – DN1200 (2" – 48") |
| Pressure Rating | PN10 – PN40 |
| ANSI Class | Class 150 – Class 300 |
| Body Material | Carbon Steel, Stainless Steel, Alloy Steel, Ductile Iron |
| Gate Material | Stainless Steel, Hardfaced Alloy, Wear-Resistant Steel |
| Seat Material | EPDM, NBR, PTFE, Metal Seat |
| Connection Type | Flanged, Wafer, Lug |
| Operation | Pneumatic Actuation, Manual Override |
| Temperature Range | -20°C to +250°C |
| Sealing Type | Bi-directional / Uni-directional |
| Leakage Standard | API 598 / ISO 5208 Class A |
| Design Standard | API 609, ASME B16.34 |
| Applicable Media | Slurry, Pulp, Wastewater, Chemicals, Abrasive Fluids |
Pneumatic knife gate valve
Automated control of abrasive slurries, tailings, and pulp pipelines.
Manages sludge, wastewater, and chemical dosing pipelines with automation.
Handles corrosive and viscous slurries in process pipelines.
Controls pulp stock, effluent, and processing slurry pipelines.
Automated control for dense or semi-solid industrial liquids.
Used in ash handling, cooling water, and condensate slurry pipelines.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
