I’m not handy but I can make a great sandwich.

[GreenRed]

Hello ,
I want to install some shut off valves under the kitchen sink and have these fittings with pex to copper.
Looking for input on what I should use for shut off values?

thanks

 

[Twowaxhack]

That’s either 1/2” or 3/8”’ SDR-9 pex.

Can you measure the diameter ?

 

[sarg]

I suggest ball valves ........ always over compression valves.

 

[GreenRed]

Thanks for the help.

 

[Jeff Handy]

Where do you want to put the shutoffs?

At the location shown in your pic, which looks like a union type of fitting?

Or do you want to splice them in lower down, which is what I would do.
With either a Sharkbite pex to pex shutoff, or use pex to pex crimp shutoff if you have the tool.

 

[Twowaxhack]

Where do you want to put the shutoffs?

At the location shown in your pic, which looks like a union type of fitting?

Or do you want to splice them in lower down, which is what I would do.
With either a Sharkbite pex to pex shutoff, or use pex to pex crimp shutoff if you have the tool.

The picture is showing a pex faucet adapter fitting. It transitions from pex to the faucet inlet.

I see these a lot in Manobloc type systems.

Manobloc systems can use 3/8” ID tube ran directly to each fixture. Each fixture has a cut off at the main manifold usually located in the garage, laundry room, etc.

No cut offs under the fixture.

That’s why I asked what size his pipe was.

 

[GreenRed]

The picture is showing a pex faucet adapter fitting. It transitions from pex to the faucet inlet.

I see these a lot in Manobloc type systems.

Manobloc systems can use 3/8” ID tube ran directly to each fixture. Each fixture has a cut off at the main manifold usually located in the garage, laundry room, etc.

No cut offs under the fixture.

That’s why I asked what size his pipe was.

The pex is 1/2, I assume since the fitting below is “1/2 pex” see image.

 

[Twowaxhack]

You need a 1/2” pex x 3/8” od straight stop valve and a 3/8” x 12” faucet connector.

The valve can be crimp on with the ring or you can go push fit. I’d go crimp, but I’m also a pro and have the tools and experience.

Good luck to you sir.

 

[GreenRed]

You need a 1/2” pex x 3/8” od straight stop valve and a 3/8” x 12” faucet connector.

The valve can be crimp on with the ring or you can go push fit. I’d go crimp, but I’m also a pro and have the tools and experience.

Good luck to you sir.

Thanks, I think I like Jeff’s idea of cutting the pex further down, any cons to doing that?

 

[Jeff Handy]

I have no experience with Manoblock systems.
It sounds like they are set up like electrical systems, with home runs to a manifold with service stops, kind of like house wiring leading to a breaker box.

EDIT oops “ManaBloc”

 

[Twowaxhack]

Thanks, I think I like Jeff’s idea of cutting the pex further down, any cons to doing that?

Sure, cut wherever you’d like, just get a long enough faucet flex line.

 

[Twowaxhack]

I have no experience with Manoblock systems.
It sounds like they are set up like electrical systems, with home runs to a manifold with service stops, kind of like house wiring leading to a breaker box.

Exactly but worse. It would be like having a breaker for every outlet or light fixture.

 

[Jeff Handy]

Sure, cut wherever you’d like, just get a long enough faucet flex line.

Can’t he just splice in a pex to pex straight stop, and leave the faucet supply connection as is?

But then, his next faucet might have different length of supply lines built in.

 

[Twowaxhack]

Can’t he just spice in a pex to pex straight stop, and leave the faucet supply connection as is?

Yes

 

[GreenRed]

Thanks gentlemen