Which stop valve do I use?

[PM5K]

This question is in regards to stop valves for a bathroom sink.

I'm used to seeing either one of the following:

Copper supply, use compression fitting

Galvanized Steel, use threaded fitting

The current configuration is a copper supply with a threaded brass (can't be copper right?) end soldered on.

So what exactly do I do with this, buy a threaded brass stop valve?

Thanks in advance!

 

[TMB9862]

Use a 3/8" or 1/2" IPS by 3/8 compression valve. Brass and copper pipe threads are the same size as iron pipe threads.

 

[Sponsor]

 

[PM5K]

I didn't think I could use a compression valve.

Here is what they look like for the record, although this isn't the one in question, it's the same:

 

[Cass]

It appears that you have a 1/2" copper male adapter...you will use a 1/2" IPS X 3/8" compression angel stop and I would suggest a 1/4 turn stop. Use Teflon tape on the threads.

 

[PM5K]

Does it have to be 1/2" IPS X 3/8" compression

Or can it be 1/2" IPS X 3/8" something else ?

 

[Redwood]

3/8" compression is probably the most commonly used size outlet for faucets, dishwashers, and toilets. 1/4" compression would be used for icemakers, point of use water filters, and hot water dispensers.

What do you have in mind?

 

[NHmaster]

Don't forget to get left and right handed valves

 

[Redwood]

And call NH Master to borrow his left handed pipe wrench too!

 

[NHmaster]

sorry I'm busy right now sorting out a box of left and right 16D galvanized spikes.

 

[PM5K]

Can you use a stop valve with a compression outlet by just screwing braided stainless supply line into it OR say using a copper or chrome plate supply line that's put on via a compression fitting, or is a compression stop valve only meant to be use one way?

 

[Redwood]

Use this type of connector it will thread right onto the valve. The one shown below is for toilets.

Note: Do Not Buy the the Watts Floodsafe Connectors that big orange box pushes.

 

[Ian Gills]

If any of you would like me to go to the storeroom and ask the bloke there for a left-handed anything, then please let me know.

 

[PM5K]

Thanks, sorry for being such a noob, I've actually done this a few times before, but I saw what I was expecting to see, this time I didn't.

What's this left hand joke?

 

[Redwood]

Phew, glad you recognized the joke!

 

[PM5K]

I didn't, but since you helped I don't mind you guys having fun at my expense...

 

[NHmaster]

It's something we like to do to apprentices. Send them to the truck for a left hand pipe wrench, then wait to see how long they are gone. It carries over to all the trades.

 

[rpaquet]

It appears that you have a 1/2" copper male adapter...you will use a 1/2" IPS X 3/8" compression angel stop and I would suggest a 1/4 turn stop. Use Teflon tape on the threads.

That fitting in the previous picture shows a similar type on a new shower valve I put in. I just got around to checking today and I have some leaks. I used teflon tape. Will the leaks stop eventually?

 

[Terry]

Will the leaks stop eventually?

Doubtful.
I would pull them and reinstall.

 

[Redwood]

You used a connector like the one I pictured above to install a shower valve?

The one I pictured is for a toilet! It is not supposed to be used inside a wall.
The leak will not stop thats pretty much guaranteed...
Can you post a picture of it?

 

[Terry]

A flex connector?
No way.

And you can't use tape with connectors. The tape will prevent it from sealing.