Slurry Pump Discharge Check Valve Review
Check abrasive wear, backflow, vibration, water hammer, and maintenance access.
Where this happens
These check valves sit after slurry, tailings, and abrasive process pumps, where a pump stop can drive reverse flow and slam while the medium itself grinds the valve. Both problems land on the same valve at the same position.
How it goes wrong
A slurry pump check has to do two things that pull against each other. Like any pump check it must close before reverse flow builds, or it slams; like any slurry valve, its wetted parts are ground down by solids at velocity. The trouble is that the discs, hinges, and seats that give a fast, soft close are exactly what abrasion attacks — and packed solids can hold a disc open or jam it shut. A clean-water check valve dropped into this duty either slams, wears through, or seizes. So closing behavior and abrasion resistance have to be reviewed as one problem, not two.
Valve types that address it
The structures usually considered — the final choice still follows the duty.
What decides the selection
Before comparing prices, these decide the check route. Closing behavior and wear resistance cannot be judged separately here.