1" Check Valve w/ Flapper Assy

The Waterway 1-Inch Check Valve with Flapper Assembly (670-1100) is a 1-inch swing check valve with flapper for Waterway pool and spa plumbing. Prevents backflow in 1-inch plumbing circuits. The flapper allows forward flow while blocking reverse flow. Waterway brand.

SKU: 670-1100