The valves in backflow preventers may also be made of plastic. Polyvinyl chloride (PVC) is a widely used material with good flexibility and non-toxic qualities. Polypropylene (PP) is similar to PVC, ...
Supplier: Check-All Valve Mfg. Co. Description: Class 150 or 300 flanges, and the FIV Class 600 (F6) valves are designed for schedule 80 pipe or Class 600 flanges. Flange Insert valves can be used as ...
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