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Posted on Mar 14, 2009
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Think I have pinhole leak in 1/2'' copper water pipe

Incoming water line ''drips'' about 3-4 drips per 24 hours. Looking back the line I see a darkened (slightly bluish) section that is somewhat wet and gritty.

What should I do?? House is only 7 years old.

1 Answer

Anonymous

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  • Expert 234 Answers
  • Posted on Mar 14, 2009
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Joined: Mar 12, 2009
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What type of pipe are you looking at?If it is copper then you can fine someone to solder it.If it is plastic pipe with glue joints,then you get some glue call rain and shine,clean first then apply wait a few minutes.But turn the water first.

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2helpful
1answer

We have a brand new rheem 40 gal elec water heater, after installation we have water leaking from the base of the relief valve, pooling up in the plastic fitting and making it way over the side all over...

Water heater should be set in a drip pan.
Otherwise, put 1 gallon bucket under TP release pipe to catch water.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#drip-pan

When you say relief valve, I assum you are talking about brass valve located on top of tank or near top of tank. This is TP valve and a pipe connects to this valve and runs down to within 6" of bottom of tank. TP valve has a small lever on it.
If you are talking about tank drain valve located at bottom of tank, then add a comment.
Following information is for TP valve.

Dripping TP valve can be caused by 3 different thing:

1) Obstruction inside TP valve. Open TP valve for a moment to flush away particles and slowly lower lever back down. See if water stops dripping, if not, then replace TP valve

2) Defective TP valve: replace TP valve. Turn off electricity to water heater. Let heater cool for several hours so you do not get scalded. Close shut off valve located above tank on cold side. Open tub spout to relieve pressure, open tank drain or open TP valve and empty water below TP valve level. If TP is located on top of tank, not much water has to be drained. Tank is under press when hot, so be careful. Put teflon tape on new valve and install with big pipe wrench by turning clockwise until TP valve is very tight.

3) Overheating tank. TP valve is temperature-pressure valve. If tank water is over 150 degrees, the TP valve starts drizzling hot water to relieve tank pressure.
Lower tank pressure two different ways:
a) turn down thermostat
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html
b) install expansion tank on incoming cold water line
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html#expansion-tank
tip

Gorilla Tape Pipe Fix

If you have ever had a pin hole in a copper pipe in the middle of the night. If you just can't afford to call a plumber at that hour and pay those off hour prices. If you need to get some sleep for work or maybe you just can't fix it properly, right at that moment. Here's the answer.
Get yourself some Gorilla Tape and a heat gun. If you have some sand paper or a wire brush bring that too.
1. Turn off the water to the leaking pipe. Then find the exact spot of the pinhole.
2. Dry the outside of the pipe with the heat gun. Be careful not to stand in or drape the electric cord into any standing water.
3. Lightly sand the section of the pipe to take off the polished shine of the copper. Be careful of the heat you just applied to the pipe.
4. Now, tear yourself off a piece of Gorilla Tape and wrap it tightly around the place on the pipe that you prepared. Be generous with the thickness and stagger the pieces to add to the width of the patch.
5. It is time again for the heat gun. Heat the Gorilla Tape with the heat gun until it shrinks and becomes shiny. Don't linger at any one spot for too long. Keep moving the heat gun around. Continue doing this until you stop seeing a change in the tape and it becomes uniform in appearance.

That's it. I have seen this trick hold 50psi for 8 hours before it started to drip. If it starts to drip. Tie a rag around the tape and attach a string to the rag. Run the string into a bucket and the water will follow it.
You can try to use regular duct tape, but I can't guarantee the results. Gorilla Tape is the only tape I have been able to use successfully, in this situation.
Now, go back to bed. You've got work in the morning.
on Mar 02, 2010 • Plumbing
tip

What to do When Your Copper Piping Springs a Leak

One of the greatest improvements to come along for quite a while for the do it yourself market is a push type fitting that fits any CTS (copper tube size) tubing. It does not matter if the piping material is copper, cpvc, poly, pex, or whatever. Just so long as it is standard CTS size. These fittings come in many different forms, configurations, and name brands. A couple of the most common name brands would be Sharkbite, Tektite, Cash-Acme, and Watts. I have tried many of them and they do all work well, so do not be as concerned with the brands as the availability. In others words use whatever you can find quickly, it will probably work just fine.

Copper piping has been a great way to run the water lines in your home. But what do you do when the piping does not keep the water on the inside? The most common way a pipe will leak in copper piping is a “pin-hole” leak. This type of leak can be easily repaired very quickly and with some new innovations on the market today.

To repair a leak what you have to do is to identify the source of the leak. Sometimes it may be a very slow drizzle that can run along the pipe before dripping off of the pipe. Do not assume that where the water is dripping is the spot of the leak. Often times the leak will be a very fine spray. That can make it very difficult to identify exactly where the water is coming from. If you hold up a piece of paper or cardboard, and then watch where and how the water is hitting it, this will help you trace the spray back to the hole in the water pipe.

Another problem can be getting the pipe cut without crushing it. Copper piping that is leaking can often be so thin that it has very little structural integrity. A good sharp tubing cutter will help you to cut through the pipe with out crushing it. You need to be very patient and only crank the cutter closed a quarter turn at a time, so you do not crush the pipe as you cut it. A quarter turn of the knob on the cutter will be enough to slowly cut the pipe and not crush the pipe.

Make sure you have a good clean cut on both ends of the pipe, then carefully push the repair coupling onto one end of the pipe. Next, carefully get the other side of the pipe started into the coupling and then push them together firmly till they are seated into the coupling. This is a very simple process that will take you less time to do, then it will for you to find the fitting in the store and purchase the fitting.

Push repair fittings are a great item to have on hand “just in case”. The next time you go to the hardware or home center, look for them and grab a couple extra for that next time you may need to make that quick repair in your water lines.
on Dec 05, 2009 • Plumbing
0helpful
1answer

I have a hotpoint hot water heater it's about 6 years old. When I turn the hot water on it runs very slowly the water pressure is very low and it's like this throughout the house how do I fix this problem...

You have clog in the water line.
Since all hot water pipes are involved, clog is probably near water heater.

Buy pressure gauge at hardware store that threads onto hose connection.
Brady BTG 100 at Amazon
Picture of gauge

Check outdoor pressure for baseline pressure in your home.
Turn off electricity to hot water heater for an hour or two so there is not scalding water.
Open drain valve on water heater to see if water heater is clogged with sediment.
http://waterheatertimer.org/Water-heater-will-not-drain.html

Put pressure gauge on drain valve and compare with outside pressure.
Open hot water spigot on bathtub and see if tank pressure drops ... if tank pressure drops significantly with bathtub spigot on, then clog is on incoming cold water before tank, and could be on outgoing hot water pipes too.
If tank pressure stays about the same, then clog is on outgoing hot water pipes.

Clog can be sediment caught in cold water shut off valve located above tank. Open and close valve and test pressure again. Take apart incoming cold water pipes above tank and check for sediment. Replace valve. Look at condition of cold water nipple on top of tank.

Sediment caught at hot water elbow near tank.
Sediment can fill up old pipes. Take apart hot water pipes above water heater and see condition.
Look at condition of hot water nipple on top of tank.
You may have to take apart pipes up to first or second elbow.

Pipes can decay at joint where copper pipe connects to galvanized pipe. Check for copper to galvanized connections on cold or hot pipes and replace section of galvanized pipe. Copper pipe will probably be good, the galvanized pipe will deteriorate. Replace copper-to-galvanized joint with 3/4" non-conducting union from hardware store
2helpful
2answers

Low boy water heater leaks at point where cold water pipe enters caseing.The leak is below the threads.The caseing is rusted at the point where the pipe goes through.Can this rusted place be patched or...

1) Your water heater needs to be replaced.
It cannot be repaired.
Tanks rust out after anode rod is depleted unless anode is inspected and replaced 1-3 years.
Water softener causes anode to deplete quicker, so inspect every 2 years.
Also stray household current can cause tank to rust out. Put bare copper ground wire between hot and cold pipes on new heater.

2) First thing is protect yourself from tank rupture where water heater bursts open and water runs until it's shut off. Ruptured tanks are big topic in homeowner insurance industry today because they cause major damage inside house.

- Turn off heat source so tank is not under pressure:
Gas: Rotate dial to pilot so pilot light stays lit, but burner does not turn on
Electric: turn off circuit breaker

- Turn off water going into tank using shut off above tank.
- Open hot side to bathtub to relieve pressure from tank.
- Check label on side of tank to get tank specifications for replacement.

3) What to do until replacement.
You can get by for a while on leaking tank by turning it ON only when needed.
Make sure tank is full of water before turning heat source back on.
This will buy time until replacement.
Electric tank heats 21 gallons water per hour.
Gas water heater 41 gallons per hour
Shower uses 6-9 gallons hot water, bath uses 12-15 gallon hot water.

4) Additional reading so next tank lasts longer
http://waterheatertimer.org/Replace-anode-rod.html

http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

http://waterheatertimer.org/Water-at-bottom-of-water-heater.html
tip

Copper Pipe Repair ? What to do When Your Copper Piping Springs a Leak

Copper piping is a great way to run the water lines in your home. But what do you do when the piping fails to keep the water on the inside? The most common form of leak in copper piping is a “pin-hole” leak. This type of leak can be repaired very quickly and easily with some new innovations on the market today.

The greatest thing to come along for quite a while for the do it yourself market is the push type fitting that fits any CTS (copper tube size) tubing. It does not matter if the piping is copper, cpvc, poly, pex, or whatever. Just so it is standard CTS size around. These fittings come in many forms, configurations, and name brands. A couple of the most common brands would be Sharkbite, Tektite, Cash-Acme, and Watts. I have tried them all and they do all work well, so do not be so concerned with the brands as the availability. In others words do not be afraid to use whatever you can find quickly, it will probably work just fine.

Now to repair a leak all you have to do is identify the source of the leak. Some times it may be a very slow drip that can run along the pipe for a space before dripping off of the pipe. Do not assume that the spot of the drip is the spot of the leak. Other times the leak will be a very fine spray that can make it very hard to identify exactly where it water is coming from. Hold up a piece of paper or cardboard and watch where and how the water is hitting it. That will help you trace the spray back to the hole in the pipe.

The next problem can be getting the pipe cut with out crushing it. Copper piping that is leaking often can be so thin that it has very little structural integrity left in it. With a good sharp tubing cutter you can cut through the pipe with out crushing it. Just be patient and only crank the cutter closed a little bit at a time, so you do not cave in the pipe as you cut it. A quarter turn of the knob on the cutter will be enough to cut the pipe and not crush the pipe.

Now after getting a good clean cut on both ends of the pipe just carefully push the repair coupling onto one end of the pipe. Then carefully get the other side of the pipe started into the coupling and push them together till they are seated into the coupling. All in all this is a very simple process that will take you less time then it will for you to find the fitting in a store and purchase the fitting.

The push repair fittings are a great thing to have on hand “just in case”. The next time you get to the hardware or home center, look them up and grab a couple for that next time you may need to make a quick repair in your water lines.
on Dec 04, 2009 • Plumbing
2helpful
1answer

I recently had to replace the thermostat in a 1 year old Whirlpool propane water heater. Since then the water heater burners ignite about every hour and run for 20 minutes even when no water is being used....

Hello HI GAS USAGE indicates a LEAK in the hot water supply piping.Is there buried pipes anyware,that could develop a pinhole leak you ca'nt see?Is any faucets dripping at all?That is exxesive run time for a heater in standby mode the new thermo is doing its job.Feel the supply pipe is it always hot?
0helpful
1answer

How do I replace the water line in the door?

Hello,

Find your route to the water line. Drill a hole in the floor behind the refrigerator and thread the copper tubing into the basement. Go to the basement and find the main water line and pull the copper tubing to it.

Step 2
Attach pipe to refrigerator. Go back up to the kitchen and attach the end of the copper tubing to the water pipe of the refrigerator. You can use a nut and ferrule to connect the tube to the fridge. Make sure to leave a little bit of copper tubing coiled behind the fridge so as to not disconnect the tubing when moving the fridge.

Step 3
Turn off the water. With the fridge all hooked up, go back to the basement and turn off the water. Find the cold water pipe and drill a 1/4-inch hole to accommodate the copper tubing.

Step 4
Attach valve to pipe. You need to attach the water valve to the main pipe. This allows you to control the flow of water to the refrigerator. Make sure you have a gasket to seal between the valve and main water pipe.

Step 5
Connect the copper tubing. With the valve connected to the main water pipe, connect the copper tubing using a clamp. This should be everything you need. Turn on the main water and you should be able to get a glass of water, but it will take an hour or two for the ice cubes to freeze.

Take care..

0helpful
1answer

Inlet Valve leaking

I would try PLUMBER'S GOOP (hardware store) on the copper pipe. Remove it and put a liberal amount of goop on the end about a quarter inch back from the tip -- insert and smooth the goop around the connection -- let it cure for 24 hours -- turn water back on.

Charlie
Aug 22, 2009 • Home
0helpful
1answer

Rheem small 6 gallon water heater vibration/noise

If the water heater is working fine than I would not worry about the function of the water heater. What the problem may be is that some of your WATER LINES HAVE MOVED, AS THEY WERE NOT SECURED PROPERLY. The sound you may have heard was the Copper or PVC(Plastic) lines just getting back comfortable. I Suggest checking that your water lines are secured about every 3 or 4 feet with the proper ancjhor....Metal for metal pipe, copper for copper pipe, etc. Sometime as in my house, pipes are run through a hole drilled through a stud or a piece of wood, usually when hot water is run through this pipe. You can here an expansion of the water line interacting with the pipe expanding, if the hole in the wood was not drilled big enough......Experience of remodeling a very old house.......Joe
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