Instantly save you 66% Off. For incredible markdowns on the hottest Watts Series 007M3QT Double Check Valve 3/4" (0062020) Watts Series 007M3QT Double Check Valve Assembly 3/4" FEATURES: Ease of maintenance - only one cover top entry, replaceable seats and seat discs, modular construction, compact design, cast bronze body construction - 1/2" - 2" (15-50mm), top mounted ball valve test cocks, low pressure drop, NO SPECIAL TOOLS REQUIRED FOR SERVICING, 1/2" - 1" (15 - 25 mm) have tee handle shutoffs, 1-1/4" - 2" have lever handles, a double check valve assembly shall be installed  ...More Details