Reduce number of fittings and potential leak points Features the industry??s largest internal reservoir Manage each supply line from one central location Get centralized zone control and fast hot water delivery with the innovative pureflow ManaBloc manifold system. Polysulfone component includes integrated 1/4 turn shutoff valves and T-handle valve key. With the reliability and quality required for potable water. Viega PureFlow manifolds are part of Viegas complete innovative plumbing solution. Pureflow Manabloc manifolds allow for uncluttered installation with fewer potential leak points, easier maintenance, and faster hot water delivery. 12 hot, 18 cold ports Polysulfone component Does not include port adapters or supply adapters Peace of mind thanks t.