Single-Handle Faucet - Are Inlets Interconnected?

[leak_chaser]

I have an old Delta single-handle faucet that I want to use for cold water only. There will be no hot water line connected to the faucet.

Will the water come out of the hot inlet when the faucet is on?
Will the water come out of the hot inlet when the faucet is off?

What is the best way to plug the hot water inlet?

Thanks.

 

[Jadnashua]

Depending on the model, it may not work. If it has a pressure balance function, and that is working, NO water will come out when only one supply is present. What you could do is run the cold to both the hot and cold sides of the valve - then, the pressure would be equal, and any of those valves will work. If it is already plumbed with hot and cold, and you just want to turn off the hot, it should be easy to check.

 

[Sponsor]

 

[leak_chaser]

What you could do is run the cold to both the hot and cold sides of the valve - then, the pressure would be equal, and any of those valves will work.

I did not think of that. Thanks!

 

[hj]

Only tub/shower valves are pressure balanced, but unless you cap the hot side it WILL leak water unless the handle is ALWAYS to the cold (only) side.

 

[leak_chaser]

Only tub/shower valves are pressure balanced, but unless you cap the hot side it WILL leak water unless the handle is ALWAYS to the cold (only) side.

What would be a cheap and reliable way to cap?
The ideas I have so far:

• A supply line followed by a ball valve service stop. Expensive.
  
• A faucet to pex adapter followed by a short length of pex with a plug on the end. The faucet to pex adapter is plastic - not reliable.

 

[Smooky]

I’m not sure if you are talking about a sink faucet or a shower faucet.
For a sink faucet you could add a tee to the cold side and connect both the hot and cold hoses to it.
http://www.homedepot.com/p/BrassCra...pression-Brass-T-Fitting-CT2-666X-P/202495893

What are you trying to cap? The pipes coming out of the wall or the hot side of the faucet?
Either way something like this should get the job done:
http://www.homedepot.ca/product/compression-to-tube-adaptors-3-8-inches/924468
http://www.homedepot.ca/product/brass-compression-cap-less-insert-1-4-inches/924525

 

[leak_chaser]

It is a sink faucet and I want to cap the hot water inlet on the faucet, because there is no pipe connecting to it. I was hoping for something simple like a cap, but I am not sure if there is one available for this purpose.

 

[hj]

IT depends on what kind of connection it is. Most will have a cap that fits it or can be adapted to it.

 

[leak_chaser]

It is just a regular faucet connection - 1/2 inch male straight threads, brass. I tried a 1/2 inch cap with pipe threads and that did not go on. Any idea what sort of a cap I need? I would think it would have to be something with rubber on the inside to make a seal.