Pinch valves replace plastic ball valves
Problem:
A drinking water plant in Arizona utilized plastic ball valves installed on pipelines to transport 12.5 percent sodium hypochlorite. The plastic ball valves had problems with the rubber liners swelling, which prevented the valves from shutting off completely. The ball valves’ packing also had problems with leaking hypochlorite on the floor.
Solution:
Plant personnel decided to try plastic pinch valves to solve the problems. The failing ball valves were replaced with numerous Flowrox PVEG polyamide-bodied pinch valves. Flowrox supplied the valves with EPDM rubber sleeves. The sleeve is the only component that is in
