Slurry Valve Abrasion and Seat Wear
Check solids, particle size, velocity, seat exposure, liner choice, and wear access.
Where this happens
Abrasive slurry service shows up on tailings lines, thickener and cyclone underflow, mill discharge headers, and any transfer line carrying solids. These lines run continuously and are hard to shut down, so a valve that wears out fast takes the whole line with it.
How it goes wrong
Wear is driven by the solids, not the pressure. Hard particles moving at line velocity grind away seats, gates, and any surface that sits in the flow path — and the damage accelerates where the geometry forces the slurry to change direction or squeeze past a partly open element. A standard shut-off valve has a seat and cavity exposed directly to that stream, so it erodes in weeks. This is why a valve sized correctly for pressure still fails early: what survives slurry is bore geometry, liner material, and replaceable wear parts, not the pressure rating.
Valve types that address it
The structures usually considered — the final choice still follows the duty.
What decides the selection
Before comparing prices, these are the factors that decide whether a valve survives the duty and how often it needs service. None can be judged from the valve name alone.