How to Plumb a Bathroom: 11 Steps (with Pictures) wikiHow
Mar 06, 2020· 1/2 inch cpvc, pex, or copper pipe can do toilet, sink, tub (3 fixtures) from the cut offs all the way to tub or shower valve and washing machines with 1/2 inch pipe, but the trunk water line should be 3/4 inch. You can tee off for kitchen sink and washing machine with 3/4 inch x 1/2 inch/1/2 inch tee. 1/2 supplies up to 3 fixtures on hot or cold.