PEX Plumbing System Parts

A PEX plumbing system is configured using three basic sets of components:

1. Manifold:

The manifold, Figure 1, is the primary distribution connection for a PEX water system. A main hot and cold feed come into the manifold and numerous runs of PEX tubing leave the manifold to deliver hot or cold water to each plumbing fixture.

A PEX plumbing system is configured using three basic sets of components:



Figure 1 - PEX tubing manifold

2. Tubing / Piping

The tubing (Figure 2) or piping takes the water from the manifold and delivers it to each plumbing fixture. The tubing is available in a variety of sizes from 1/4 to 2 inch and in colors so that hot and cold water lines can be coded for easy of installation and repair.



Figure 2 - PEX Tubing

3. Fittings / Couplings / Valves

PEX tubing is connected to the manifold and plumbing fixtures using specially designed fittings, couplings and valves.

The fittings, couplings and valves, as shown in Figures 3, 4 and 5, are usually made of brass with a crimp ring that holds the fitting, coupling or valve in position and seals the fittings, couplings and valves to the tubing.