

Knife Gate Valve
Uses a sharp-edged gate to isolate pipelines carrying slurries, powders, wastewater and other solids-bearing media.
For handling slurries and media with high concentrations of suspended solids, a Knife Gate Valve uses a sharp-edged gate to move through the medium and create a clear opening when fully raised. Knife Gate Valve supplier In Africa manufactures valves that are commonly selected for applications where solids, fibres or abrasive particles can interfere with conventional isolation valves, including mining, wastewater, pulp and paper, and bulk-material handling systems.
Knife Gate Valve Features
Sharp-edged gate for cutting through suspended solids
Full-port flow passage when fully open
Unidirectional and bidirectional configurations
Rising and non-rising stem arrangements
Resilient and metal-seated designs
Lugged and wafer-style body configurations
Suitable for abrasive and high-solids media
Pneumatic, electric and hydraulic actuation options
Technical Specifications
Parameter | Specification |
Valve Type | Slurry / Bidirectional / Unidirectional |
Size Range | DN50–DN1200 |
Pressure Rating | PN6–PN25 / ASME Class 150 |
Body | Cast Iron: ASTM A126 Class B / Ductile Iron: ASTM A536 65-45-12, GGG40, GGG50 / Carbon Steel: ASTM A216 WCB / Stainless Steel: ASTM A351 CF8, CF8M, CF3M |
Gate | SS304 / SS316 / ASTM A182 F51 / Hardened Alloy |
Seat | EPDM / NBR / PTFE / Metal |
End Connection | Wafer / Lug / Flanged |
Operation | Handwheel / Gear / Pneumatic / Electric |
Standards | MSS SP-81 / TAPPI TIS 405 |



