Home>Discussions>PLUMBING>Should I replace Shut-off valves that have a permanent supply line?
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deriquez
Should I replace Shut-off valves that have a permanent supply line?

We have a newer house (2014) with Pex plumbing. I am do some renovating to the builder basic powder room and notice that all the shut off valves have the supply line permanently attached. The supply line is white plastic with a small amount of silver braiding reinforcement and is permanently crimped in place.

I always thought the supply lines were a maintenance item that should be replaced on occasion. So I'm wondering if I should replace the shutoff valves while I have everything taken apart or if these non-replaceable supply lines are meant to last the life of the house.

It would definitely be easier to swap them out now because they aren't buried in a vanity or under a toilet since the room has been cleared out and because part of the decor we are doing is a a half inch think layer of weather barnwood on the wall with all the valves. which will give me very little to no slack to replace the valves later.

Any advice would be greatly appreciated. Thanks in advance!

johnjh2o
Re: Should I replace Shut-off valves that have a permanent supply line?

I would replace them.

bill
Re: Should I replace Shut-off valves that have a permanent supply line?

you could leave the valves bodies and just changes the guts. This will work as long as the seats on the valves have no nicks or cuts.

Bill

johnjh2o
Re: Should I replace Shut-off valves that have a permanent supply line?

My opinion is the valves are not the problem. The problem is the supply tubes that can't be replaced.

Fencepost
Re: Should I replace Shut-off valves that have a permanent supply line?

In order to replace these valves, you will have to cut the PEX line and recrimp it onto a fitting on the new valve.

If the valves are compression stops (several turns to off) I'd replace them. These kind -- of this style -- are notorious for never shutting off completely and leaking around the stem. Replace the valve with a 1/4-turn stop -- only a dollar or two more. Replace the supply lines with PEX lines available from the local home center cut to appropriate length ; use the compression ring included with the replacement supply line when connecting to the shutoff valve.

If the valves are 1/4 turn stops, I'd leave them in place. The 1/4 turn style are much more reliable. As for the supply lines to the faucet, they will probably last forever. It's the rubber ones --typically used on clothes washers -- that you really have to worry about.

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