Pneumatic Lug Type Knife Edge Gate Valve

ALIS Valves offers Pneumatic Lug Type Knife Edge Gate Valves designed for reliable isolation and shut-off in industrial systems handling slurries, wastewater, powders and other challenging process media. These valves feature a sharp-edged gate or blade that moves vertically through the flow passage to cut through suitable solids and help reduce material buildup during closing. The lug-type body includes threaded lugs around the valve perimeter, allowing installation between compatible pipeline flanges and, where the design permits, independent bolting to each side of the pipeline. A pneumatic actuator uses compressed air to raise and lower the gate, enabling remote operation and integration with automated control systems. Depending on the application, the valve can be supplied with different body materials, gate and seat materials, sealing arrangements and actuator configurations to suit the specified operating conditions.

Pneumatic Lug Type Knife Edge Gate Valves are commonly used in wastewater treatment, mining, mineral processing, pulp and paper production, cement plants, chemical processing and bulk material handling systems. Depending on the valve construction, they can be suitable for compatible slurries, suspended solids, fibrous materials and selected viscous media within their rated pressure and temperature limits. Important selection factors include valve size, flange drilling compatibility, operating pressure, temperature, media composition, solids concentration, gate material, seat design and required shut-off performance. Buyers should also consider actuator sizing, available air pressure, operating frequency and whether a single-acting or double-acting pneumatic arrangement is required. Lug patterns and pressure ratings must be verified for the intended pipeline installation, particularly where the valve may be exposed to pressure from one side only. Selecting the appropriate pneumatic lug type knife edge gate valve helps support automated isolation, effective handling of challenging media and reliable operation in compatible industrial applications.