Rola-Chem 521160 3/8"B PVC Inline Check Valve Assembly
Rola-Chem 3/8" B PVC Inline Check Valve Assembly 521160 is a PVC in-line check valve used in pool and spa chemical feed systems, particularly with Rola-Chem peristaltic metering pumps. It prevents chemicals or water from flowing backward through the feed line
