I need to replace the hot water shut off valve under the sink that has the valve knob broke off.

The two attached pictures show the valve.

Can someone identify the type of valve I need for a replacement and the steps and equipment required.

Thanks

Go to a plumbingstort and pick up a 1/2" by 1/4" compression angle stop.
Shut the water off to the house at the house shut off and remove the old angle stop. Leave the old 1/2" compression nut and ferrule on the copper stub out and reinstall the new stop using the old compression nut anhd ferrule. 5 minute repair job. Good luck, Tom

Thanks for the reply...

As a check, when you say "remove the old angle stop.." I assume that is the part I have labeled "this get removed.." and the old 1/2 inch compression nut in the picture is the nut connected at the copper pipe?

Is there a way to measure the angle stop without removing it?

Is this the item? It appeaes to come with a 1/2 inch compression nut?

Brass Craft Compression Angle Stop

Quote:

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Originally Posted by stanj

thanks for the reply....

As a check, when you say "remove the old angle stop.." I assume that is the part I have labeled "this get removed.." and the old 1/2 inch compression nut in the picture is the nut connected at the copper pipe?

Is there a way to measure the angle stop without removing it?

Is this the item? It appeaes to come with a 1/2 inch compression nut?

Brass Craft Compression Angle Stop

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That's the one, sort of.

What you need is a 1/2x3/8 compression angle stop, not a 1/2x1/4 compression angle stop.

If the old stop wasn't tightened down too hard when it was originally installed, you can likely reuse the existing nut and ferrule.

Put a crescent wrench on the center section of the stop as a backstop and then turn the nut at the back of the stop with another crescent wrench clockwise.

Installation of the new angle stop is the reverse of the above; The new installation will go a lot smoother if you coat the fine threads of the new angle stop with Plumbers grease.

Ok.. Thanks

I will do it this weekend..

I think the link below is showing what you described - (step J) although in my picture I can not see the ferrule..

HOME IMPROVEMENT : Pipes & Fittings : Pipe Basics : DIY Network

Hi again.

Didn't get to the task at end this weekend, but did make it to the hardware store.
I took the info you provided and the guy at the store said this was the valve I needed :rolleyes:

Ace - Ace Tree: Plumbing: Plumbing Hardware: Supply Lines & Shut-Off Valves: Brass Shut-Off Valves: Ace Quarter Turn Shut-Off Valve

I hope to get to the job this weekend providing that this is the right valve... :o

Close but no cigar. That is a 3/8x3/8 compression angle stop, you need 1/2 inlet 3/8 outlet. From you original picture.

Also.. and this is just a very minor thing..

After you shut the water off at the main shut-off valve for the house, be sure to turn ON the water at your sink. Usually, the sink I chose is the lowest one in the house so all the water that is trapped in the pipes in the house (and are under pressure still! ) can gravity feed out.

Then when you are going to open the line where you plan on doing some plumbing no water will squirt you in the eye :eek:

Thanks for these tips..


I believe I showed the wrong item,
I think this link has the one I purchased (which is still incorrect) :rolleyes:

"ACE" QUARTER TURN SHUT-OFF VALVE AH2622 PLUMB PAK CORPORATION

With so many sizes and types, how can you tell I need a 1/2 inlet 3/8 outlet
Just by the picture or is this the standard plumbing size for a hot water shut off valve under a sink :confused:

I did not see a 1/2 inlet 3/8 outlet compression valve at the Ace Hardware site…

But at Lowe's, I see these
Brushed Nickel Quarter Turn Angle Valve 1/2"F.I.P x 3/8"O.D.


Also, is it true what I have read that replacing this valve is a bit tricky because once the ferrule is tightened, it may be on for good and may have to be cut off if a new valve is installed:(

The size is pretty standard at least in everything I've seen. In most applications you can reuse the old nut and ferrule with the new valve and be just fine unless as previously mentioned it was tightened down too much.

Stan, you showed us a 3/8x3/8 angle stop and now a 5/8 x3/8 Well, it is the one between those two. I messed with the ACE site for 15 minutes and it's a stinker to use for searches. The valve exists, get them at HD. Lowe's or any good home center, We could tell by looking at the valve that it was 1/2x3/8 compression. After you hold a few hundred in your hand theybstart to become familiar. Bet you can tell a 1/2 nut from a 3/8 nut by looking at it, right?

"After you hold a few hundred in your hand they start to become familiar"

This amazes me! I saw a guy do it today with only an 1/8 inch difference between two fittings, but he could tell the difference at a glance!! Quite a skill in my opinion!!

I can tell 1/4 inch size differences by looking, but it gets fuzzy for me smaller than that...

Great Job Guys!! Seriously!

Use two wrenches. One on the valve body and one on the nut. Don't overtiighten.

If you can't find what you have, you can always do it in two parts, but remember, that if one part is "pipe thread", i.e. tapered, you need to wrap the threads with teflon tape.

KISS I think this is all compression, both ends.

Right. An alternate solution can be to adapt a 1/2" compression to 1/2 Female Pipe thread with a female adapter and then get a 1/2 Male Pipe Thread to 3/8 compression angle stop, Right?

Thanks all...

Stopped by Lowe's and got this one in Brushed Nickel.. :D

I believe I have what I need now :rolleyes:

The Keeney Manufacturing Company