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Rogern
need help
Rogern

I have a hot water pipe that i need to move . So I want to cut it and cap it, but i cannot find the shutoff that leads to this now defunct pipe. I have a shutoff for the hot water pipes leading to all my other hot water pipes just not to this one? i'm kinda stuck. Thank you

HoustonRemodeler
Re: need help
HoustonRemodeler

The outgoing or incoming pipe of the HWH should have a valve on it. That will kill the hot water in the entire house, without affecting the cold so you can still flush.

Do be aware that using a single handle faucet will bridge the hot and cold sides allowing the cold water to travel backwards through the hot pipes to where you are working. If you have forgetful family members, its sometimes better to cut off the water to the entire house.

function
Re: need help
function
HoustonRemodeler wrote:

Do be aware that using a single handle faucet will bridge the hot and cold sides allowing the cold water to travel backwards through the hot pipes to where you are working. If you have forgetful family members, its sometimes better to cut off the water to the entire house.

Your clothes washer may do the same. Mine did and it made a nice mess for me to work in under my house.

Rogern
Re: need help
Rogern
HoustonRemodeler wrote:

The outgoing or incoming pipe of the HWH should have a valve on it. That will kill the hot water in the entire house, without affecting the cold so you can still flush.

Do be aware that using a single handle faucet will bridge the hot and cold sides allowing the cold water to travel backwards through the hot pipes to where you are working. If you have forgetful family members, its sometimes better to cut off the water to the entire house.

Is The shut off valve on the hot water pipe coming out of my hot water tank? I feel like a dummy i can find the shutoff for all the upstairs hot water. I will totally remember to shut off the main. Good point you made because i have a 4 year old running around.

dj1
Re: need help
dj1

Rogen,

The water heater shut off valve is on the cold side.

However, in your case, it would be better to shut off the main to the house, usually located where the water enters the house.

From my experience, many of these shut off valves work poorly and don't completely stop the flow of water. In other words, they malfunction. For a repair job like yours, with copper pipes to succeed, the joints have to be 100% dry, before you attempt to solder. And while you are at it, replace all leaky valves.

Not sure? not confident? - get a plumber, it will money well spent.

ed21
Re: need help
ed21

A leaky valve may only need a washer

dj1
Re: need help
dj1

"A leaky valve may only need a washer"

Very true, with the old fashion type valve and if you can find the right size washer out of hundreds available sizes in the hardware store.

For me, replacing the valve is less time consuming, translation: cheaper.

ed21
Re: need help
ed21

I never found a valve that I couldn't find a washer for. Getting it apart without breaking something can be another story.

dj1
Re: need help
dj1

Besides ed, today's valves are washer less - ball valves.

You've seen those, ball valves and angle stops, they are the ones to get.

ed21
Re: need help
ed21

But not what you might find in an old house. I can't see replacing an old valve when a new washer will fix it.

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