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Mining & Slurry
Abrasive media, high solids, high wear. The right answer is usually a different valve type, not a harder trim on the wrong type.
Slurry and dry solids defeat conventional gate valves because the wedge packs solid with the medium. A knife gate valve is designed to shear through it instead — a thin blade, an open cavity, and a seat chosen for the particle size rather than the pressure.
Where the medium is aggressive as well as abrasive, the trim matters: ceramic or hardfaced seating, a flushable cavity, and a scraper on the blade. Where it is simply large-bore isolation on a tailings or process line, a ductile iron or WCB knife gate with a pneumatic cylinder is the economical answer.
Tell us the particle size distribution, the solids content and the velocity. Those three numbers decide the seat material, the blade thickness and whether a flushing port is worth specifying.
Recommended selections
| Duty | Recommendation |
|---|---|
| Slurry isolation | Knife gate, wafer or lug, urethane or metal seat |
| Abrasive media | Ceramic or hardfaced seating, flushing port |
| Actuation | Pneumatic cylinder, spring-close fail safe |
| Sizing data | Particle size, solids %, line velocity |
Send the piping class, not the part number
We check the dimensions, the material and the standard before we price — which is the part that decides whether the valve actually fits. RFQ answered within one working day.