Connecting Fixtures to a PEX Residential Water System

Connecting a Kitchen Sink to PEX

These PEX lines are the standard 1/2" with blue for cold and red for hot. They are crimp stile connections. The following illustration shows a PEX to OD Supply Stop. This Supply Stop serves two purposes, to tie in the existing fixture to the new PEX lines and to serve as a shutoff for service.

ILLUSTRATION: Straight Supply Stop 1/2" PEX x 1/2" Male

Connecting a Bathroom Sink to PEX

Home using a PEX manifold do not require an at fixture Supply Stop (shutoff) because fixtures can be shut off at the manifold. In this case, the bathroom sink has a dedicated supply on both the hot and cold manifolds. The water supply can be shut off to the bathroom sink at the manifolds without shutting off any other fixture. PEX is more flexible than PVC and copper. For this reason, you can run PEX directly to the fixture, without using a supply connector or supply stop.

ILLUSTRATION: 1/2" PEX Swivel Faucet Adapter