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 ...
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, ...
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