Questions tagged [copper]

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2answers
144 views

Problem with NPT threads on dual check valve?

I'm installing a 1" Watts LF7R dual check valve backflow preventer and this model has a female NPT thread on both ends, according to the documentation, and it does have 7 threads and looks like it's ...
2
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1answer
53 views

Plumbing next to a grill

I am installing a outdoor shower on the exterior wall of my house to go with my new pool deck. I have a built-in grill that has an enclosed cabinet underneath. I have a way to run a hot water and ...
4
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2answers
180 views

What could cause reoccurring leaks in a hot water pipe?

I have a 12 year old house. The past couple of months a couple of hot water pipes have sprung pin-hole leaks at the solder joints. This has happened on four separate occasions. I've had three ...
2
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1answer
141 views

Aluminum to Copper run

I'm in the process of remodeling a bedroom in my house and will be replacing all the drywall. I'm contemplating the idea of replacing the aluminum wire in the room with copper. My question is can I ...
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3answers
231 views

Copper failing under the house

I am in a 10 year old house. Custom built, very nice home. Twice in the last year, have encountered a leak under the slab. History The first time about a year ago, I agreed to have the lines ...
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0answers
63 views

Copper corrosion, well water

My well water pH is 7.06 as measured by an accurate and calibrated tool used for wine making. I have around 15 gpg of hardness. My question is why I am getting between .5 - 1.0 mg/L of copper in my ...
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0answers
2k views

Do I have to remove flux residue after soldering?

I noticed those green stuff on a 2 weeks soldered copper joint, as I have read it comes from excess flux. So I would like to know if I have to always wipe off the joint after soldering? And if so then ...
3
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1answer
160 views

Why is there copper in the corner of my shower behind the tile and drywall?

I am in the middle of the demolition of my old shower and have come across this copper strip in the corner. What is this used for? I assume it is somehow supposed to prevent water damage?
1
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1answer
79 views

Replace section of copper heating-loop w/ pex

I need to replace a short (less than 5 feet) of a 3/4" hydronic copper piping loop. Can I substitute 3/4" PEX for the copper? Is there a flow-volume or any other issue?
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0answers
65 views

Water Heater Replacement - Old unit with AC Lines?

Been a lurker for awhile but now need a bit of help. Recently bought a house (Built 1992) with an original 20+ year old AO Smith short boy water heater. Still works, another win for AO Smith however ...
0
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1answer
2k views

How to clean gray paint from copper pipe for push-in fitting?

I currently have old radiators and connected 1/2" copper pipes that were painted in grey color long time ago (assuming when heating was put in place). One pipe has developed a leak and need to replace ...
1
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1answer
93 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

Pros and cons of coupling vs. threaded when transitioning from copper to PVC

I'm replacing a copper DWV pipe with PVC since it's rotting out. It looks like this: There's the cast iron on the bottom going into the foundation, followed by a brass cleanout, a brass tee above ...
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1answer
2k views

How can I connect copper pipe to an unthreaded, galvanized pipe?

I have a di-electric union which I want to install, but the union's galvinized side is threaded. The unthreaded, galvanized pipe is attached to the house so I can't easily thread it. Perhaps there's ...
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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
572 views

Spigot/spicket replacement in tight quarters

I noticed that my spigot was leaking. It was only leaking out of the hole where the water normally comes out. I made the mistake of slightly tightening the packing nut without having another wrench to ...
3
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2answers
1k views

How can I reposition a soldered copper 90-degree fitting

I have a 90 coming out of my wall in my utility room to turn the copper down the wall. I would like to swing it up as I have a taller softener. Do I need to disassemble and start over or might I ...
0
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1answer
572 views

Can a connection be established from copper wire to stainless steel bus for power connection? [closed]

I have this question. A copper cable to be connected(either crimped/ soldered/ pressure/screw fitted) to stainless steel bus bar and the bus bar is to be connected to the power supply of 12 V DC. ...
4
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3answers
6k views

How do I read the markings printed on the outside of electric wires?

In my recessed lighting project, I finished roughing-in the Romex copper wires and I was about to connect the recessed lighting wires when I noticed the wires from the lights are of a silver-colored ...
1
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1answer
505 views

Remove over tighten copper pipe fitting

The older plumber left a over tighten copper pipe (threaded) to the shower valve. I tried but couldnt remove it with wrench. I dont want to use too much force as it may break the valve. I wonder if ...
1
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1answer
467 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 ...
3
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1answer
2k views

Should I be concerned about a green crust on the copper pipes on my boiler?

I have a boiler system, about 9 years old, with copper pipes. Many of those connections and handle faucets have a green crust. Is this a sign of something wrong? What do I do? Should I be concerned?
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2answers
1k views

Old solder joints are failing

Working on a small cottage by the Delaware Bay. Last year I had to repair the plumbing in the two bathrooms because the solder joints pulled apart. This year some pipes fell out under the house ...
5
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1answer
2k views

Should a twisted copper pipe be replaced?

While replacing a hot water tank I foolishly twisted the out pipe by losing my grip on the wrench. The copper pipe twisted, so I twisted it back gently, but it now has a kink in it. Is this likely ...
2
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3answers
1k views

Hot water pipe sticking up in back yard?

Found that a copper pipe coming out of ground in back yard is the Hot Water pipe for the house. Turn on the Hot Water, the pipe gets hot. It is sticking up out of the ground and think this is NOT ...
4
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2answers
17k views

Proper way to attach tapered, threaded connections?

I've been ripping out the PB water line throughout my house and replacing with PEX and a bit of copper piping. However, the few threaded fittings each have very slow leaks. Above the water tank I ...
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1answer
321 views

What could be causing the copper green smells in my house when the furnace turns on?

We just re-did the rotting siding on my t1-11 sided fireplace. We replaced siding and covered it with hardi-plank. The problem is, when my furnace turns on, air is pulled from the fire place and the ...
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2answers
6k views

Pretty big electric shock when touching my lamp

I just received a fairly large electric shock when trying to turn on the lamp on my nightstand while I was sitting in bed. When we purchased the lamp, it was 110v however we had it changed to 220v ...
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2answers
1k views

Sweat 3" Copper With Mapp Gas Torch?

I need to remove a section of 3" copper, and replace it. Has anyone ever done this with a single Mapp gas torch? I'm not sure if its going to have enough heat to get it done. I probably could get it ...
1
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1answer
5k views

Removing rigid copper pipe to install dishwasher

I'm trying to install a new dishwasher, replacing the 20 year old one I currently have. I have a compression shutoff valve underneath the sink for the hot water water. It has two outputs, one going up ...
2
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3answers
3k views

Can a Wood Burning Stove use a stovepipe made of copper for a chimney?

Planning to install woodburning stove one day. The plan includes exposed stovepipe running up through a loft space, through attic, and out to roof chimney. I know the stovepipe comes in black and ...
1
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1answer
264 views

Should a copper central-heating water pipe be mortar-ed in when passing through an internal wall?

I've been trying to track down some very annoying 'ticking' sounds that happen within seconds of the central heating coming on. I know that it likely to do with copper central heating pipes under the ...
2
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2answers
7k views

Tiny leak in soldered copper 1/2" pipe joint

I have recently completed a solder joint using a repair coupling (1") for 1/2" copper pipe for my washer. However, it appears that there is tiny leak - less than one bead of water / day. Is there a ...
2
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2answers
4k views

How do I bend 8-gauge copper wire?

This question may be slightly off topic, but I'm hoping I'll find the expertise I need on this site. I'm making a bird feeder out of a wine bottle, and wrapping 8-gauge copper wire around the bottle. ...
4
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3answers
19k views

Do I have to bury PVC pipe if used outdoors?

I will be installing a hose spigot in a lower patio area that, till now, has had to have several lengths of hose to provide water for some potted plants. There is an existing spigot on a 3/4" copper ...
0
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1answer
9k views

How do I add a P-Trap to a copper drain?

I started to get a smell in the downstairs bathroom and after ruling out the wax seal on the toilet it is coming from the sink drain. We are in a split level so technically its in the basement. ...
2
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1answer
992 views

Dryer vent pipes touching copper hot water pipe

I am installing a long clothes dryer vent in the crawl space under my house to replace the old one. I am using a combination of both flexible metal pipes and rigid stove pipes to try to reduce the ...
4
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1answer
6k views

How do I modify a refrigerator water line to add a shut off valve and flexible pipe?

I recently bought a house and bought a new fridge to go with it. The copper pipe that connects to the fridge water has a shut off valve underneath the house and is extremely inconvenient to access. ...
0
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2answers
11k views

Repair holes in copper pipe

The drain pipe under my sink is made of copper and has a couple of small holes just before it goes into the wall (and eventually leads out to a greywater tank). The picture below is taken from ...
8
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3answers
18k views

What happens if I shave a little sliver off electrical wire with a utility knife?

I needed to replace an electrical wire with a longer one so I could move an electrical outlet. When I went to cut away the outer rubber cover of one of the wires with a utility knife (yes, dumb, I ...
3
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1answer
9k views

Why is there green stuff on my heater pipe?

No, really the baseboard heat is made of copper and is constructed of a series of pipes with fins. they look like heat sinks, or dissipation helpers. Well, was cleaning the carpet by the baseboard ...
4
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2answers
3k views

Corrosion on copper pipes due to insulation (with foam)

My incoming water pipe is copper and it is a brand new installation with no leaks. But due to the hot humid weather (even in the basement) it sweats due to condensation. Should I insulate it? The ...
6
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1answer
2k views

When replacing a supply line to a house in Houston, TX, what is the best material to use?

A house in Houston, TX (southern "sun belt" climate, no frost, but flexible clay soils) has a Polybutalyne supply line running from the meter to the house. It's already burst once and been repaired, ...