See all products of Dual Check (DuC) FlowShield™ DuC, Dual check backflow preventer (sweat) FlowShield™ DuC, Dual check backflow preventer (PEX) FlowShield™ DuC, Dual check backflow preventer (press) FlowShield™ DuC, Dual check backflow preventer (FNPT) FlowShield™ DuC, Dual check backflow preventer (MNPT)
