I'm going to be replacing several shut off valves throughout my home. They are a very old type where the supply line is part of the shut off valve, not it's own separate entity.
I've done this once before for a toilet with great success. Thankfully, the supply line included with the new toilet told me what the outlet size should be on the new shut off valve.
The shut off valves I'm going to be replacing are under bathroom sinks. What is the traditional shut off valve outlet size for that? 1/2" 3/8" 1/4"? Does it really matter?
Best Answer
About 95% of all faucet and toilet stops are 3/8 compression on the outlet. Of course the input depends on your piping in the house, but usually use half inch IPS