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Technical guide · August 2, 2026

Knife Gate Valve Selection Guide for Slurry Service

How to select knife gate valves for slurry, wastewater, pulp and solids-bearing media.

Knife Gate Valve Selection Guide for Slurry Service

Knife gate valves are designed to isolate fluids containing suspended solids, fibres or slurry. Seat style, gate guidance and installation orientation are central to reliable service.

Media description

Provide solids percentage, particle size, tendency to settle and abrasion level.

Seat design

Metal, resilient, push-through and perimeter seating arrangements suit different leakage and slurry duties.

Actuation

Handwheel, bevel gear, pneumatic, hydraulic or electric operation is selected by size and thrust.

Installation

Avoid pipe strain, provide flushing if needed and allow space to remove the gate and actuator.

Information to include with an enquiry

Provide nominal size, pressure rating, medium, temperature, connection standard, materials, operating method, required testing and project documentation. Greysen will review the duty and confirm the final configuration in the approved data sheet.

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