One of our clients in Philippines contacted us for help to solve corrosion and abrasion problems for existing ball valves used in mining projects. The corrosive and abrasive mining slurry with solids is about to be disposed to the tailing's dam and the important metals are already extracted.

The composition of solids is as follows:

The problem encountered is passing valve or worn-out observed internally as follows:

After analyzing the working conditions and problems, considering the high pressure, we supply our customized ceramic lined ball valve solution to solve the abrasion and corrosion problems for our client. The body is lined with ceramic, the ball is in material of stainless steel 316 with tungsten carbide coating, and the seat is made of solid tungsten carbide.

The ceramic material and tungsten carbide material both have excellent performance in abrasion resistance. So the ball valves can stand the high working pressure and the ball, the seat and the body inside can stand the abrasion caused by the mining slurry.

Normally the ceramic ball valves have ball and seat produced in ceramic material to be corrosion and abrasion resistant.

When the working pressure is high or the solid particles are with big sizes, to avoid ceramic fracture, we don't use ceramic ball and seat. The ball can be in material of stainless steel and coated with tungsten carbide coated. The seat can be produced by solid tungsten carbide coated.