Questions tagged [copper-tubing]

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1answer
30 views

Can copper pipe support minor bends and creases?

I have a male threaded adapter for steel pipe on a 3/4" copper pipe. When twisting an extension steel pipe on the fitting, I applied a bit too much force and that slightly bent and creased the ...
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3answers
59 views

What to use a 90 and when to two 45s in copper piping? [closed]

I'm replacing the tubing for an outdoor hose and in the wall I found what you see in the picture below. Why did they use two 45s and not one 90? Is there a general guideline for when to avoid 90s in ...
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1answer
49 views

How to unscrew this spigot?

(From my earlier posts, you may have learned that I had several different bibs cause several different floods in different parts of my house. Each instance posed its own unique challenges. This is a ...
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1answer
56 views

Should I paint copper pipes exposed to nature?

I'm using copper piping -- about 5 feet total -- externally, to make it easier to water the grass. In addition to copper pipes, the connectors and valves are brass (Sharkbite). Should I prime/paint ...
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2answers
60 views

Can I raise an A/C Unit and platform up maybe 5 inches without disconnecting anything?

I know there is refrigerant in the a/c unit. I know there is a copper wire connecting the unit to the house. From what I am reading and from the videos I have watched, I can put a 4 by 4 under the ...
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2answers
45 views

Sealing a water pipe leak with hardening compound without disassembly

I would like to seal a threaded fitting without disassembly. In the past, I have used some kind of hardening substance that could be used to stop leaks on water pipes. This is, of course, not "...
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2answers
180 views

Straightening a bend copper tubing of an air conditioner filled with refrigerant

I have a bent copper-tubing of an air conditioner filled with refrigerant that I want to straighten (because I need make some space for mounting a curtain rail). Now, I'm fully aware that it is not ...
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1answer
40 views

attaching a coupling to copper pipe very close to wood

I have a copper pipe connected to a pex pipe by a leaking sharkbite fitting. I'd like to replace the sharkbite fitting with something more permanent. However I'm not sure if it's safe to use a ...
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1answer
976 views

Installing PEX pipes close to heating vents

We are renovating all the bathrooms in our house that was built in the early 70s. The plumber has replaced most of the copper pipes with PEX tubing. He has not replaced copper entirely and has ...
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1answer
170 views

how do I replace a single union pressure reducing valve?

I see a 115 PSI water pressure at my home. Looks like my PRV is hosed. I am a complete newbie in plumbing, please take a look at the pictures and help me understand what I need to replace the PRV. So ...
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2answers
806 views

Can you repair a kinked copper pipe?

I have a copper water pipe which has a mild kink in it, very similar to this photo, not even quite as severe: It is hard copper. The kink itself is not causing any problems but in the future I may ...
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1answer
161 views

How were these copper pipes attached to the T&P discharge valve likely connected?

In the rental house I'm in now, the T&P release valve on the water heater is connected with copper discharge tubing which exits the garage. See this picture . The right-side of the pipe seems to ...
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3answers
1k views

Installing propane tank to gas range with strange copper pipe

I am replacing a gas range and the gas line that was connected to the previous range doesn't fit into any of the fittings that came with the installation kit or directly into the range (which is how ...
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2answers
2k views

Can electrical solder be used for joining pipe?

Some background here: I'm an electrical engineer, working on a project that is likely going to require liquid cooling. As part of the installation of this liquid cooling system, a joint needs to be ...
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3answers
672 views

How can I cut copper water pipe to add a fitting?

I am used to working with PVC and CPVC, but these are copper pipes that I am thinking about adding in a water cooler that needs a water line. My question is, obviously I can't use the CPVC scissor ...
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2answers
124 views

Copper to PEX connection

I am swapping out an old pedestal sink for a conventional vanity. Currently in place are some 1/4 pex lines that are run through the pedestal. I want to swap the small pex for 1/2” and am fairly ...
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2answers
267 views

Copper NPT male fitting: accepted practice to sweat to the inside?

My plumber did this and I'm finding it hard to search about, asking for my next project. Here's an example: the 1/2" side of this fitting is 1/2" male NPT, but you can also sweat a 1/2" copper pipe ...
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1answer
244 views

Crooked compression fitting: leave be or replace again

I installed my first compression fitting (fridge water line) and when I was all done I discovered that it looks like it is slightly crooked. I'm not sure if this means that I bent the pipe or perhaps ...
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3answers
873 views

connect copper without soldering

I need to connect bow copper as on the picture with a copper pipe, and I'd like to avoid soldering. Is there a special tool for this?
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3answers
188 views

Do water lines that contain lead need to be replaced if it doesn't flow out of a valve that I normally drink out of?

A plumber had came to my house to sweat pipes to install a water valve which controlled water going to the garden spigot. Upstream to the valve is a t-joint. The other output to the t-joint went to ...
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1answer
60 views

How do water piping sizes compare?

Comparing different types of water piping is confusing. It seems that a 1/2" copper pipe is not the same size as a 1/2" PEX tube. I've read different things in different places (e.g. forums). Which ...
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0answers
2k views

Soft copper Tubing for exterior LP Gas Lines

What are the Copper Pipes Connected to the LP Gas Tanks outside coated with? And is it Code That they have to have that coating on them?
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1answer
2k views

Why does a water line behind wall of home have capped off areas above supply area that heads out to wall?

I couldn't find an answer to this question using Google. I think it's because I am not sure how to ask the question properly. I am not a plumber but I have seen in my new construction house with cpvc ...
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2answers
3k views

What threading type is my ice maker shut off valve?

In my new apartment, I moved in to find the water dispenser in the fridge is not working. I quickly diagnosed the issue by moving the fridge away from the wall and finding that there is a water line ...
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1answer
1k views

Soldered copper vs threaded copper at shower valve

I am replacing a shower faucet. The previous install soldered the copper to the shower valve but I am considering using threaded copper in case I ever need to replace it. What are the pros and cons of ...
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1answer
770 views

Best foam for copper wiring insulation in split-unit A/C?

I went to home depot to buy foam insulation for my A/C split unit inverter. It's to cover the copper wire (and other wires) that go from the inside unit (in the room) to the outside unit (in a roof ...
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2answers
1k views

how do I remove copper stain coming from plumbing?

I have that blue stain in my bathtub The stain comes from my plumbing, which probably contains copper that rusted and creates that stain. I tried to remove it with bleacher but to no avail. Do you ...
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2answers
226 views

Cutting large diameter threads

I have an extensive tap & die set, but they're mainly designed for common bolt sizes. The threads I need to cut are in (and on) metal and/or plastic pipes, or tubes; ranging between ∅49-89mm. ...
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2answers
2k views

Do I need to separately bond sections of copper pipe connected by push-to-connect fittings?

If I have two sections of copper pipe (water or gas) connected by a push-to-connect fitting (e.g. Shark Bite brand's push-to-connect pipe fittings), is electrical continuity preserved, or do I need to ...
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1answer
1k views

Why does water come out of the hot supply line when I open the cold?

Removed the water heater in a house we are renovating. I capped the copper line running into the water heater, but didn't see a need to cap the hot water line coming out, figuring it was not under ...
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0answers
114 views

Finding the copper pipes the radiant floor heating converges

I'm trying to troubleshoot our central heating system in our residential house. Our house was built around the 90s and I've found that we use Radiant Floor Heating. The plans I've obtained from the ...
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2answers
2k views

Soldering soft copper to hard fitting

I'm trying to solder a soft copper coil to a regular fitting and its not working, (I did already a lot of soldering and never had a problem) is there any tips or tricks for soft copper? Do I have to ...
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1answer
326 views

Should I upgrade to 3/4" pipe all the way to my new pex manifold?

I have a water meter with a 3/4" supply line that is fitted to an adaptor which then runs 1/2" to all the pipes in my house. I'm in the process of installing a PEX manifold system for some new ...
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1answer
118 views

can I mount a copper pipe to stone with an epoxy?

how can I mount a copper pipe vertically to a flat slate stone after first drilling into the stone to insert the end of the copper tubing?
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2answers
1k views

How to seal PVC-U and copper pipes together

How to seal a gap between hard PVC pipe and copper coil as visible on the picture below? It needs to stand small vacuum (45 mmHG = 1.8inHg = 6kpa = 60mbar = 0.87psi). What is the best way to do it? ...
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2answers
3k views

Greenish Deposit on Outside of Copper Pipe in Bathroom

I'm renovating my bathroom. I ripped out the floor and I noticed that there is a green deposit on the outside of the copper tubing. Is this a problem? Do I need to have a plumber check it out? The ...
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2answers
2k views

What is the purpose of the valve between these two pipes?

I saw an interesting arrangement of pipes and valves in a house I visited. These are hot water pipes, the two vertical pipes connect to a radiator. What is the purpose of the valve between the two ...
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3answers
2k views

Copper pipe through cinder block wall: corrosion issue

The pipe in the picture runs from my oil tank through my basement wall and to the outside (guessing it's the vent pipe for when they fill the tank). Should I be concerned about what it going on at ...
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1answer
594 views

How to remove old A/C piping in my house?

When I had my new A/C installed I moved it to the other side of my house (right next to the furnace), so now I have a bunch of old copper piping running about 30 feet from one corner of my house to ...
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1answer
5k views

When to use drop ears + nipples, and when to not?

So I know enough to use brass when using nipples on water supply lines (especially if they consist of copper and copper fittings). However it isn't clear to me when it is best to use nipples and when ...
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2answers
2k views

Can I use a Sharkbite connector to join copper to rubber pipe?

Can I use a Sharkbite connector to connect a copper pipe to a rubber tube instead of PVC pipe? I am trying to make an outdoor drinking fountain. I have run black flexible piping up to a copper T-...
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1answer
125 views

Why multiple copper tubes joined together?

I found this behind my vanity and shower. I'm sure there is a good reason for the multiple copper tubes joined together into one supply line, but I have no idea. Can someone enlighten me, please? I'm ...
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1answer
849 views

How to properly attach copper pipe to steel framing?

What is a code-approved way to secure copper pipe to metal framing members which minimizes heat transfer and potential reactivity between the two different metals?
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2answers
3k views

How to repair pierced refrigerant line in chest freezer?

My idiot friend was screwing brackets inside an ice cream freezer with self-tapping screws, and one of the screws pierced a copper line containing refrigerant. Apparently it made a crazy hissing sound ...
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2answers
648 views

Home waterline upsizing questions

So I JUST had my plumber replace the service feed to my house with a soft copper 1" dia. line, which was originally 3/4" dia. GSP from the street to the house (~35' as the line lays). I wish I had ...
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1answer
2k views

Very low pressure at the end of natural gas pipe

In our new house, I found a 1/2 inch natural gas copper pipe that runs all the way from the basement to the second floor, into a small room that used to be a kitchen years ago. The line is around 80 ...
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1answer
209 views

Bench soldering copper pipe into a subassembly

Is it possible to pre-assemble and pre-solder copper pipes into a subassembly that then can be installed using a threaded fitting? I'd much rather solder the joints either in an oven environment or ...
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5answers
82k views

What type of copper pipe do I need for a typical LP gas range?

I need to buy ~25' of copper pipe to fix our badly kinked stove line. It looks similar to (but worse than) this pic: I won't be able to measure the pipe for a couple days and the guy at Lowes wasn't ...
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1answer
3k views

Corrosion on copper pipe: Is this a concern?

I came across some corrosion on a copper hot water line in our house: Is this a potential early warning sign of impending pipe failure? I did some research online and came across multiple ...
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1answer
3k views

How do I plumb an outside line to a roof deck faucet?

I want to get water from the first floor up along the outside of the wall (with a parapet and projecting coping) to the second floor. I got this working as follows: 1st floor hose bibb -> 4:1 hose ...