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Questions tagged [copper]

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17
votes
10answers
4k views

What can cause a never-frozen indoor copper drain pipe to crack?

The 1-1/2" copper waste pipe than runs from our kitchen just up and cracked two days ago along its length, and for no apparent reason. The crack is in a section of pipe that runs vertically through ...
13
votes
9answers
180k views

How do I “fix” a bad sweat (solder) joint?

I tried soldering some 1/2" copper (to make something like this) and some of my joints are horrible. I tested it with water and some of the joints leak. What is the best way to fix the joints? ...
8
votes
7answers
3k views

Repair tiny hole/scratch in copper pipe

I discovered a very tiny hole/scratch in a copper pipe in my basement this morning. It looks like the scratch was caused by a screw that was holding up some wood paneling. The hole is in the middle of ...
8
votes
3answers
17k 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 ...
6
votes
3answers
35k views

How to tell when a plumbing fitting is tightened correctly?

I replaced the supply valve on my bathroom sink with this ¼-turn angle valve. Both valves (hot and cold) are leaking about 1 drop every few seconds at the valve's input. I got them hand ...
6
votes
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, ...
5
votes
3answers
25k views

How can I join two lengths of flexible 1/4" copper pipe?

I have found a leak coming from under my refrigerator, after pulling it out to get behind it I found the 1/4" copper pipe that supplies the water for the ice maker and water in the door was severed ...
5
votes
3answers
872 views

resoldering copper waste pipe

I've soldered new copper pipe but have never resoldered it. A shiny band of silver solder remains on the end of the copper pipe after an elbow has been removed from it. Does that shiny band have to ...
5
votes
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
votes
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 ...
4
votes
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 ...
4
votes
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 ...
4
votes
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 ...
4
votes
1answer
54 views

Inserting a Tee In 1" Pipe for an Air Compressor?

I have a copper pipe outside my house that is 1" in diameter (Measured 1.1 inches using a digital caliper) that feeds our house's sprinkler system. My dad uses his commercial air compressor to clear ...
4
votes
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 ...
4
votes
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 ...
4
votes
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. ...
3
votes
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 ...
3
votes
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 ...
3
votes
1answer
159 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?
3
votes
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?
2
votes
3answers
24k views

Should I replace all the copper pipe in my heating system with PEX?

I am replacing my existing faucet plumbing with red / blue PEX all over the house. Everything that goes to the sink, dishwasher, washer, bathroom sink and so on will be color coded and installed ...
2
votes
4answers
30k views

Is stainless steel water piping more durable than copper?

After thirty years of usage, the plumbing in my house is starting to fail progressively. The water pipes in my house is made of copper, one of which is suffering from pitting, which results in a pin-...
2
votes
3answers
5k views

Wire nut several wires together

I need a wire nut large enough so that I can bundle seven 14 gauge neutral wires together. I am trying to splice it so I can connect it to my new smart wifi leviton light switch. I don't know which ...
2
votes
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. ...
2
votes
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 ...
2
votes
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
votes
1answer
983 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 ...
2
votes
1answer
775 views

Confused about CO/ALR devices versus AlumiConn and Copalum

Our 1960's house in California has aluminum wiring. When we bought it 15 years ago, I wanted the nicer Lutron receptacles and light switches, so I rewired all the outlets and switches using twist ...
2
votes
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 ...
2
votes
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 ...
2
votes
2answers
49 views

Soldering a Tee onto a Copper Pipe That Only Moves About 1cm?

I have a rigid 1" copper pipe that I'm trying to solder a tee onto. It comes off the house and only moves about 1CM up or down. I've already cut it to test how rigid the two pipes were. This isn't ...
2
votes
4answers
100 views

Heat transfer to adjacent solder joints

If I want to remove a soldered joint in a shower valve by heating it and pulling it, would that heat cause damage to the other soldered joints about 2-3" away on the valve?
2
votes
1answer
90 views

I'm replacing the under-sink pipes, and I'm confused what connector this is

I'm replacing the pipe under the sink after it cracked. I thought I had figured everything out, but the connector I got doesn't fit due to this non-threaded copper bit above the threads, is it ...
2
votes
1answer
87 views

Modern half-bath copper DWV configuration

First off: I KNOW PVC is fine. I KNOW PVC is cheap. I KNOW PVC is fast. I KNOW PVC is more flexible. I KNOW PVC would still be working [sarcasm] 300 years after I'm dead. Now that I've sufficiently ...
2
votes
2answers
144 views

Can I have confidence in copper sweat joints that were repaired without disassembly?

Ok...I have seen several answers to this but I want to ask something related... I just worked for 16 hours, teaching my son to sweat copper. We re-did his whole house, pulling galv and replacing with ...
2
votes
1answer
140 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 ...
2
votes
1answer
47 views

Copper to CPVC transition fittings : allowed by code to be used inside a wall?

Does the Uniform Plumbing Code (US) allow copper-to-CPVC transition fittings to be used inside a wall? Just to be clear, I'm referring to the hybrid fittings that are part brass, part CPVC.
2
votes
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 ...
1
vote
2answers
360 views

cold water too hot in AZ—worth it to insulate attic copper?

All of my plumbing runs through copper lines in an accessible attic in a 1960's slab-on-grade ranch style home in Phoenix, AZ where I don't need to tell you how hot the attic can get for a huge chunk ...
1
vote
2answers
676 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 ...
1
vote
4answers
83 views

Connect two pipes that do not line up

Not a plumbing whiz, so I thought I'd pose my issue here. I have a 12in Shark bite sillcock that runs through my brick foundation for an outdoor hose. Once inside, it connects to the existing copper ...
1
vote
1answer
84 views

Copper water water line is out of round slightly

Copper pipe water line is out of round....can I still use a compression fitting valve and just add some teflon tape at the compression nut to ring seat fit. it is slightly oval. I noticed a slight ...
1
vote
2answers
1k views

How to stop copper pipe corrosion (green copper stain in sinks and tubs)

I have couple of questions to the experts. I see copper stains (green/blue) in my sinks and at shower tubs. I had comprehensive water analysis done. Water was sampled from tap after flushing. My water ...
1
vote
2answers
111 views

Will copper/iron pipe last longer with/without stand water in shower riser?

I have very specific practical question. Which way a pipe will last the longest and less corrosion will appear inside (internally) the pipe while it last? 1 I have one shower water IRON pipe, the ...
1
vote
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? ...
1
vote
1answer
55 views

How to remove sink faucet pipe from shutoff?

I am currently attempting to replace the faucet in my kitchen. I successfully removed the hot water pipe that goes from the old faucet to the hot water shutoff. I am now trying to remove the cold ...
1
vote
2answers
142 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 ...
1
vote
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?
1
vote
1answer
91 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?