Plumbing fittings for water supply, namely push-fit in the nature of junctions, straight couplings, conversion couplings, reducing couplings, straight connectors, reducing connectors, bullnose connectors, elbows, reducing elbows, stubout elbows, dishwasher elbows, drop ear elbows, hy-ear elbows, branches, tees, bullnose tees, reducing tees, end stops, fitting reducers, threaded adaptors, slip fittings, swivel fittings, swivel adaptors, sweat adaptors, swivel elbows, swivel toilet connectors, slip couplings, slip tees, slip tee adaptors, manifolds, manifolds with branches, angle stops, straight stops, stop valve tee adaptors, stop valve connectors, faucet connectors, toilet connectors, toilet elbows, pipe connections and couplings, conversion tees, tap connectors, flexible water heater connectors and tube adaptors, pipe fittings, PEX barb fittings and clamps, supports for piping and tubing, compression adaptors, pipe supports, suspension clamps, clamp rings, crimp rings, pipe clips, sleeves, valve connections and couplings, ball valves, water mixing valves, backflow preventers, check valves, supply line fittings and stops, water heater connectors, water heater kits consisting of connector fittings and disconnect tongs, contractor kits consisting of connector fittings and disconnect tongs; dishwasher kits, toilet kits, and faucet kits, each consisting of faucet connectors, angle stops, and tubing; disconnect tongs, pipes and tubing, parts and accessories of and tools for assembling and disassembling all of the foregoing, as are included in this Class