Skip to main content

Questions tagged [pipe]

For questions generally relating to hollowed out materials used to convey a liquid, gas, or other fluid substance.

Filter by
Sorted by
Tagged with
33 votes
5 answers
11k views

Is it a problem that my bathtub drains directly into the wall?

Here is what I see inside the hole My landlord said is ok. But I think water going directly to wall can't be a good idea. My question is how bad is it? Needs fixing right away? If needs fixing, how ...
07mm8's user avatar
  • 447
33 votes
5 answers
36k views

Why does this pipe feeding a hot water heater dip down like this?

This is a cold water pipe just in front of the hot water heater it is feeding. Why is it shaped that way? What is its function?
Rob's user avatar
  • 1,238
31 votes
5 answers
17k views

What is this vertical metal pipe in my backyard? old well? septic?

Purchased this house last week and the previous owners also did not know what it was. The pipe is heavy duty and set in concrete. There's water about halfway up the length of the pipe, but I haven't ...
Drew's user avatar
  • 884
28 votes
3 answers
5k views

Why are the inside diameters of some pipe larger than the stated size?

I'm looking over some specifications for black pipe. I understand why dimensional lumber is smaller than the stated dimensions, but why would the pipe manufacturers give you more volume than what is ...
gnicko's user avatar
  • 5,625
24 votes
4 answers
12k views

Can I pour concrete over a PVC sewer pipe without damaging it?

I'm currently in the process of digging a hole in my front yard to install a flag pole. The dimensions of the hole are 16" deep and 24" in diameter. Once I reached my 16" depth, I ...
Randy's user avatar
  • 241
24 votes
2 answers
13k views

What is an air bleeder valve, and how does it winterize pipes?

I found this message attached to a pipe in the first house I bought Caution Winter Drain Instructions: Close valve in October before winter freeze Open air bleeder valve on side of main valve Open ...
asmgx's user avatar
  • 997
23 votes
6 answers
6k views

Must these old pipes be replaced?

We are currently renovating our bathroom ourselves on the 2nd floor. We were going to redo the tiles only, and we found a newspaper from 1947 around the old pipes which means it was installed a long ...
sol1000's user avatar
  • 384
21 votes
9 answers
22k views

What is this pipe coming out of the basement floor?

I’m finishing an old (1930) empty basement and have a random pipe coming out of the floor. ⁠I have no clue what it is or what it went to as it sits alone in the space. ⁠It is metallic (tested with a ...
Aaron's user avatar
  • 211
20 votes
2 answers
5k views

Why not put pipe dope on female thread?

What is the risk of having pipe dope in natural gas line? Not blobs of dope, but a thin layer or bead on inner (female) thread. Most instructions on using pipe dope on gas pipe says to put pope dope ...
codechimp's user avatar
  • 757
20 votes
6 answers
5k views

Is all copper pipe pretty much the same?

Is there different levels of quality in copper plumbing pipe? I see copper pipe at Home Depot and I assume plumbing supply stores sell it too. Does pretty much everybody sell the same quality of ...
Tyler Durden's user avatar
  • 6,887
20 votes
3 answers
5k views

Why would you use copper over CPVC or PEX?

Are there any advantages to using copper rather than CPVC or PEX?
jlpp's user avatar
  • 1,974
19 votes
8 answers
11k views

What are these capped, metal pipes in our yard?

We've owned this home for 5+ years now, and these pipes have been bugging me. Even moreso now that I'm looking to do some landscaping right over one of them. The house was built in the 60's in a ...
Marisa's user avatar
  • 315
19 votes
3 answers
5k views

Can white bread be used to temporarily plug pipes for repair?

I've been digging on the Internet, for a solution to soldering a dribbling pipe. It seams logical, but I wanted to check if anyone has tried this, and if they had any problems getting the bread out. ...
reggie's user avatar
  • 405
17 votes
3 answers
17k views

Turn off hot water without hot water valve

I have a leaky pipe on the hot water side that I'd like to fix. Following the pipes back to the water heater, I don't think there's a shutoff valve installed anywhere in the line, not even at the ...
Sittin Hawk's user avatar
17 votes
9 answers
74k views

Should I run the tap while dumping boiling water?

It seems to be common advice to run the cold water while dumping boiling water down the drain (for example, when draining pasta). A variety of reasons are cited for this, one of which is that it is ...
browly's user avatar
  • 355
16 votes
1 answer
2k views

What is this humming machine in my basement hooked up to a pipe?

There is a machine in my basement/crawl space that is making a loud hum. The sound is really loud and needs attention. It normally does not do this. The text on the pipe says "waste and vent only....
Bernie2436's user avatar
15 votes
5 answers
18k views

Does a drainage pipe need to be continuously sloped?

I need to move water from the back yard to the front yard, to combat the monsoon season, in which a 50 gallon container in the backyard can fill up in 1-2 minutes. I bought some 4" piping, and ...
Village's user avatar
  • 1,045
15 votes
4 answers
35k views

What is this mysterious pipe in my back yard?

There's a plastic pipe with a vent cover in my back yard that runs to a green cap in the middle of the yard. What is this for? I don't have a septic tank. Update: this picture shows the entire ...
Dennis's user avatar
  • 253
15 votes
4 answers
9k views

Why are there loops of copper water pipe coming out of my concrete floor?

Pulled out an old tub, and back in the wall, I found 7 water lines that come up, connect to each other, and then go back down. They were not attached to the tub at all. Why 7?? Can I use these for a ...
kthornbloom's user avatar
15 votes
4 answers
71k views

How can I tell if these pipes are gas lines or water lines?

I recently moved into an in-law unit of a large old house. In the kitchen, there are two pipes coming out of the wall (one protruding out a little more than the other). I had assumed they were gas ...
Erica's user avatar
  • 151
13 votes
11 answers
10k views

How can I cut this recessed PVC pipe?

The top of this pipe is gouged where it needs to seal with the new shower base. I need to trim off a few inches from this pipe so I can glue on a clean piece. the hole is 10" square. The pipe ...
Platinum Goose's user avatar
13 votes
5 answers
4k views

Attempt to locate buried sewer line with melted snow?

I live in a housing addition (built 1965-1980) in the barren (no trees) Oklahoma panhandle. The first thing the new home owners in this area did was plant as many trees as possible. Over last several ...
Oily Tex's user avatar
  • 399
13 votes
7 answers
5k views

Outdoor burst pipe best practice for the winter

We had an outdoor tap (faucet) fitted in the summer last year here in Edinburgh UK. The temperature here often dips to just below freezing over the winter. Outside, at least. The plumber suggested we ...
paul_h's user avatar
  • 305
13 votes
2 answers
5k views

Is it safe to use Category 1 80,000BTU furnace with 2 inch PVC exhaust?

A contractor just finished installation of new HVAC system with a category 1 furnace (model: GMES800805CNAA). He originally used a reducer to connect 4 inch exhaust to a 2 inch PVC pipe. He claimed ...
Dimi's user avatar
  • 255
13 votes
2 answers
6k views

What makes a tee "sanitary"?

I'm looking at tapping into an existing drain line at the vertical vent, which I understand should be via a horizontal run to a sanitary tee. The vent is 2 inch PVC; the horizontal piece I will ...
fectin's user avatar
  • 459
13 votes
3 answers
7k views

How can I add valves to supply lines when the lines are soldered to the faucet?

I am trying to replace an old faucet that my 3 yo child is unable to use because of its design. I'm new to plumbing but actively reading. I haven't seen these supply lines w/o valves before. This ...
eszed's user avatar
  • 565
13 votes
1 answer
7k views

What is this large pipe coming out of my roof?

I've looked at the other "What pipe is this?" questions, and none of them that I've found seem to match... I don't know what the large metal pipe is (on the right side). Can anyone identify what it's ...
Jeremy's user avatar
  • 233
12 votes
5 answers
30k views

Is this plastic pipe connecting city water to the main line dangerous?

I bought a whole house water filter to hook up to the main water line. The plumber who came in said that he won't be able to install it because the pipe that comes from the ground hooked up to the ...
coder net's user avatar
  • 501
12 votes
3 answers
14k views

Why does our shower make a screaming noise?

Our shower has a problem...It's very loud! When water hits the correct temperature and flow the shower immediately starts shrieking like a banshee. It seems to be related to the flow because we can ...
Micah Siegel's user avatar
11 votes
2 answers
4k views

Adding salt pellets direct to home water tank

Our house is not connected to a town water supply, we just have a water tank under our house (approx. 12000 litres / 3000 gallons). We have it filled from a water truck every 3-4 weeks. Apparently ...
Midavalo's user avatar
  • 211
11 votes
3 answers
2k views

A 1" T fits the pipe and a 1" valve does not, why?

Both of these are labeled 1". The T on the left fits the little bit of grey pipe. The valve on the right is too small. What am I missing?
CW Holeman II's user avatar
11 votes
7 answers
12k views

slow draining bathtub - is a frozen pipe a possibility?

Our bathtub has recently started draining very slowly (bathtub fills with water during a normal shower and takes a while to completely empty). This problem has coincided with winter, and I'm wondering ...
Jason's user avatar
  • 211
11 votes
1 answer
1k views

Doping threaded gas pipes -- which threads are the "last" threads?

I've heard that to join threaded gas piping in my house, I should use either pipe dope or teflon tape rated for gas. Regarding the dope, I've been told to dope "all but the last two threads."...
theforestecologist's user avatar
10 votes
4 answers
6k views

How to temporarily catch leaks trickling down the outside of a pipe

I have a small, slow and steady trickle of water running down the outside of a vertical 15 mm copper pipe. How can I capture the leak and divert the water into a receptacle? I'm not asking for a ...
ConanTheGerbil's user avatar
10 votes
7 answers
7k views

How can I temporarily repair a lengthwise crack in an ABS drain pipe?

I have a 3" diameter by 4 ft long, vertical ABS sewer drain pipe (unpressurized), in my wall that has a crack running lengthwise for around two feet and slowly getting longer. I've called a ...
FuzzyChef's user avatar
  • 222
10 votes
5 answers
17k views

What is causing these water heater pipes to rust/corrode?

This water heater was replaced by a plumber 4-5 years ago. Within about a year, all the new connections were rusting/corroding. Did the plumber not sufficiently tighten the fittings? Is this perhaps ...
zwiebelspaetzle's user avatar
10 votes
3 answers
14k views

What is this closed off pipe under my kitchen sink? [duplicate]

This pipe has a very slow leak. What is the pipe for and what is the best way to stop the leak?
Kim's user avatar
  • 101
10 votes
2 answers
18k views

What caused a burn mark near my hot water pipes?

I was doing some household cleanup in the storage room where my heat tank is located when I noticed a burn mark on the wall frame near the pipe that goes from the heat tank to the shower next room. ...
Pierre-Alain Vigeant's user avatar
10 votes
3 answers
9k views

How can I cut a metal pipe while preserving the wires inside?

I need to install a dishwasher with a solid bottom into this space, where this solid pipe (green rectangle above) is in the way. How would I remove the pipe, or at least make it level with the floor, ...
dfitzgerald's user avatar
10 votes
3 answers
65k views

Does it matter what kind of pipe is used for a sink drain?

The drainpipe in our sink broke (corroded right through in several places). Not having the time to find my pipe wrench (much less actually replace the pipe) we called a plumber. The plumber replaced ...
Snowbody's user avatar
  • 213
10 votes
1 answer
12k views

When to replace a toilet's wax ring?

I just bought a new house that was built three months ago. I unfortunately flushed something big down the toilet and had to take the toilet apart, turn it upside down, and fish it out. When I was ...
Kyle Bridenstine's user avatar
10 votes
5 answers
67k views

How do I easily separate unglued PVC pipe from joints?

I've been retrofitting an existing PVC irrigation system around my house. Part of that work requires that I work in shallow holes adding T joints and elbows in places where there were none before. In ...
rheone's user avatar
  • 253
10 votes
4 answers
17k views

Do tub drains of the same diameter ever have different thread-per-inch counts?

My tub's drain flange has had the little cross piece inside it broken out, which means I cannot screw a grid drain into it. Right now, it's totally open and an invitation for my toddler to drop stuff ...
susie derkins's user avatar
9 votes
6 answers
7k views

How to create a hidden plug for PVC pipe

I'm working on building a semi-permanent set of full-size soccer goals. Full-size in this case means 6' x 18'. Because of the size and spans, I'm planning on using 1.5" PVC pipe and fittings. And ...
user avatar
9 votes
1 answer
2k views

What is this pipe

I have a small cupboard in basement I store paint etc. In house has oil heat but getting a sort of gas smell after bumping the pipe feels loose like it was just back filled with gravel . Old home ...
Rocky Heintzman's user avatar
9 votes
3 answers
852 views

Do I need to do anything for my external spigots during a short hard freeze?

Like the questioner in Do I need to do anything to protect my pool during a rare freeze? I live in central florida and its going to be a hard freeze tonight. Do I need to let the spigots drip or cover ...
chotchki's user avatar
  • 460
9 votes
4 answers
494 views

Removed sink, now what?

We've decided to replace the sink (which was way too small) with one from Ikea. This is how it looks after the removal: Now for the problems: The sink that was there before was a free-hanging one, ...
phw's user avatar
  • 239
9 votes
1 answer
3k views

Connecting a p-trap via bending the drain stem vs the trap arm?

I have a p-trap that has an outlet that ends too close to the wall for it to be able to be connected straight into the trap adapter of the vent inside the wall. I'd like to avoid the non-code ...
Tony DiNitto's user avatar
9 votes
7 answers
325k views

Is there a way to thaw a frozen pipe, if you can't access the pipe?

Big freeze, new house. Just found out the add-on bathroom was plumbed by amateurs, and the cold water supply froze. I don't have access to the frozen section of pipe (without major demo), so I can't ...
Tester101's user avatar
  • 132k
8 votes
7 answers
14k 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 ...
bfink's user avatar
  • 193

1
2 3 4 5
20