Watts Water Technologies P-20PORT Preassembled PEX Manifold 20-port q/c pex manifold Watts manifolds operate much like an electrical breaker box The main water supply lines bring water into the manifold and individual distribution lines move wat All outlets have a built-in valve which allows you the ability to stop the water flow to any single The Watts manifold system utilizes an exclusive modular design. manifold sections can be expanded us