Fittings come in all shapes and sizes, including some with stems that fit directly into other fittings, making building a manifold or adding valves literally a snap. End caps are handy for emergency repairs or to keep the head and galley working during a plumbing project elsewhere. Sea Tech also makes PEX quick-connect fittings to snap into Jabsco (www.xylemflowcontrol.com/jabsco) water-pressure pumps.
