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Questions tagged [pipe]

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

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How do you control what angle plumbing joints go in at?

I'm an electrical engineer, working on repairing a somewhat complicated pneumatic system, but I figured this would probably be the best place to ask. This is probably a very basic question to anyone ...
Hearth's user avatar
  • 175
0 votes
2 answers
263 views

Water Pressure Regulator not regulating after rebuild

I just rebuilt my Zurn Wilkins 600XL 1" pressure regulator, but it still is not controlling the pressure after rebuild. One thing I notice is if I measure the pressure immediately after closing a ...
SDSHuge2.0's user avatar
6 votes
4 answers
120k views

Effect of changing the size of a pipe

I've had a couple questions above the sizing of a pipe, but I'm still a little confused and can't find an easy answer. I'll use this image to get a representation of what I'm looking to have answered....
TFK's user avatar
  • 3,714
2 votes
2 answers
757 views

Keeping a Threaded Pipe at 90 degrees

I recently demo'd a bathroom that was using a "rustic farmhouse" galvanized shelving unit. I took this unit off and was hoping to re-install. Ideally, the elbows would thread in so when they are ...
RCNeil's user avatar
  • 257
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
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
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
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
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
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
7 votes
6 answers
10k views

What do I use for backfilling septic pipe leaving my home?

I have a 4" PVC septic pipe leaving my house on the cinder block wall about 4 feet below my house. There was a crack inside of the part where it leaves the house and I need to replace it (from ...
math314's user avatar
  • 77
4 votes
2 answers
42k views

Water Still Dripping From Sink Even After Cut Off Valve Off

I want to change the faucet on my vanity, so I was cutting the water off at the valves under the sink (image below) - cold works fine, but the hot, even when the valve is as tight as I can get it ...
Stanley Jones's user avatar
3 votes
1 answer
3k views

Should I replace a kinked hot water supply pipe?

I recently put a kink in this hot water supply pipe. It's not leaking now, but I'm not sure if I should replace it proactively at this point. I'm looking for a practical answer, since replacing this ...
Mike Eng's user avatar
  • 196
2 votes
0 answers
858 views

How to connect bathtub drain pipe to existing floor drain?

I have this floor drain and I want to connect it to a bathtub drain so basically another pipe. The diameter is about 40mm of the narrower pipe, although it has a thick border. It is most likely a ...
appwizcpl's user avatar
  • 191
2 votes
1 answer
118 views

How to minimize waterback flow mess when cutting an in-service pipe

The photograph is in the ceiling of the first floor under the home. If the shark-bite is disconnected, a significant amount of water will flow from upstairs to downstairs. Any clever way of ...
gatorback's user avatar
  • 3,088
2 votes
2 answers
25k views

How many outlets can 1/2" copper pipe support?

My basement apartment's hot water pipe runs starting with 3/4" from the heater to the first outlet, the bathtub and the 2nd one, the washer. From the washer, it goes to the bathroom sink (please don'...
amphibient's user avatar
  • 7,515
1 vote
1 answer
290 views

Drylok turning copper pipe green, is it corrosive to metal or copper?

Recently had drylok put on my basement walls and some of it got onto the copper pipe water main coming through the wall - and I noticed that it has turned green under the drylok. Does drylok and ...
MonkeyBonkey's user avatar
  • 1,209
1 vote
0 answers
456 views

opening water pipe/tap has hissing noise throughout the house [duplicate]

Possible Duplicate: How to eliminate the “whooshing” sound of water running though pipes. I have a 3 story townhouse. Any time when I open a tap, even very slowly that water is just ...
coder net's user avatar
  • 501
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
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
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
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
8 votes
2 answers
29k views

What is 'Cellular Core' or "Foam core ABS' pipe?

At a big home store today, all the black drain pipe was 'cellular core ABS' in 'schedule 40'. What does the 'cellular' mean? The pipe was very inexpensive.
Bryce's user avatar
  • 10.9k
7 votes
6 answers
37k views

Is it wrong to connect multiple J-bends (traps) together?

My tenants recently told me that they have constant clogging problems with their bathroom sink and had me come take a look at it. I found the following 3-trap configuration: This was done because the ...
Ryan Dlugosz's user avatar
7 votes
2 answers
23k views

How to remove this plastic pipe elbow

I cannot seem to get this plastic pipe elbow (pictured below) off. It joins a plastic pipe to an outside tap and the elbow has a crack in. I've tried twisting, pulling and pushing it - but it won't ...
james246's user avatar
  • 223
6 votes
1 answer
38k views

Can I move my bathroom sink's drain pipe about 6 inches to the right?

I found the vanity I wanted for my bathroom, but it doesn't fit due to the position of the drain pipe. It needs to move about 6 inces to the right. I assume there is some sort of adapter or ...
oscilatingcretin's user avatar
5 votes
5 answers
65k views

How can I fit a pipe inside another pipe?

Does anyone here with experience in plumbing or piping know if a 3/4" pipe can fit inside a 1" pipe to the point where you can slide it in and out like a telescope to make an adjustable stand post? ...
Baldemy's user avatar
  • 53
5 votes
1 answer
4k 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 ...
diylettante's user avatar
5 votes
2 answers
61k views

How can I thaw a frozen washing machine pipe limited access semi-exterior wall?

The pipes for our washer have frozen. I believe they froze in the section that runs through the wall facing an enclosed, uninsulated porch. I currently have the heat cranked in the laundry room and ...
Kaz's user avatar
  • 51
5 votes
7 answers
3k views

How can I replace this cast iron tee without increasing the width of the connecting pipes?

The problem is that this cast iron tee sticks out about .5" ahead of the studs. So this is preventing me from drywalling. The cast iron pipe at the bottom is flush with the studs. So I am looking ...
byte's user avatar
  • 195
4 votes
1 answer
14k views

Is it necessary to replace lead gas pipes?

I have some lead piping in the cellar where the gas comes into the house. Does this comply to current Gas Safe regulations?? Edit: England
JPickup's user avatar
  • 173
4 votes
4 answers
8k 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 ...
Peter Q's user avatar
  • 2,223
3 votes
2 answers
2k views

How can I tell PEX from polybutylene pipe?

There's a blue pipe (1" diameter) extending ~3 feet from the city water meter before transitioning to 1" copper, then the copper connects 2 feet later to my rusted galvanized. I've run new ...
Travis's user avatar
  • 149
3 votes
2 answers
1k views

Any advice on unthreading old Brass pipe?

Any advice on unthreading old Brass pipe? The brass pipe is in the back with the spigot attached.
Chris's user avatar
  • 451
3 votes
5 answers
25k views

How do I ensure that I hit studs and not pipes?

I'm mounting a vanity and mirror in a small half bathroom and there's only 1 stud to hit behind my drywall (1990's build). However, this stud seems to be flanked on either side with pipes. To make ...
Jaxidian's user avatar
  • 249
3 votes
1 answer
5k views

Under bathroom sink piping (exposed)

We are looking at setting up the piping for under our wall mounted sink (no vanity, ie, piping will be exposed). And after our contractor finished putting the wall we noticed that the hole from the ...
macutan's user avatar
  • 481
3 votes
3 answers
5k views

Eliminating ticking noise of pipe in wall

I know that the ABS main stack in my home is not rubbing against the floor or attic plywood openings; it is rubbing against the drywall in a interior wall when the pipe expands with the use of hot ...
Evil Elf's user avatar
  • 3,894
2 votes
2 answers
9k views

Steel wool around a gas pipe

There's a crawl space in my basement where the gas pipe to the stove goes through a hole in the ceiling. I think it might be a big enough hole for a mouse to get through so I'd like to stuff some ...
Rob's user avatar
  • 1,238
2 votes
3 answers
11k views

How do I seal a cracked pipe using epoxy putty?

So, I have a broken pipe exactly on the L join on the wall. It's a huge crack but no big gap, just a curved crack along the pipe. At first I thought of replacing the pipe, but it means that I have to ...
Sufendy's user avatar
  • 121
2 votes
1 answer
1k views

What is this called (adjustable angle pipe footplate)?

I'm constructing an EMT pipe tarp canopy frame. It will be a shed roof. One side will be pipe supported (low end) and the other side (high end) will be mounted to the top of my garage roof. The plan ...
DA01's user avatar
  • 24.3k
2 votes
6 answers
6k views

How do I remove or cut a sewer pipe at edge of our basement slab?

What's the best way to remove the unused sewer / storm-drain pipe in the attached picture? It's coming up through the edge of our basement slab where it meets the foundation wall? We want to remove ...
1905home's user avatar
  • 239
2 votes
2 answers
18k views

Are there devices to find pipes in walls?

I just moved into a new apartment and have no idea what's in the walls. This makes me somewhat afraid that I might hit a water pipe or so when drilling into the wall. Is there some kind of tool that ...
Ingo's user avatar
  • 123
2 votes
1 answer
5k views

wire Cat6 cable through PVC pipes

I bought this house with phone cable wiring though PVC pipes all over but no Ethernet at all. I'm wondering if there's a way for me to fishing Cat6 cable through those pipes. Note that it's concrete ...
Cecile Y's user avatar
2 votes
4 answers
23k views

What’s the best way to connect my 3/4” gas line to my 3/8” grill hose?

I just had a natural gas line installed in the outside wall of my house. It has a valve and a female 3/4” connector. My natural gas grill has a hose with a 3/8” connector. How can I best connect ...
Greg's user avatar
  • 121
2 votes
2 answers
25k views

How to connect 2 water tanks at different levels with one pump?

I have 2 water tanks installed in my 3 story building. 1st one is on top of the 3rd floor, the other one is on top of 2nd. The pump is installed at Ground Floor. Before now, the water flow was ...
Ahmad Hassan's user avatar
2 votes
1 answer
1k views

How do I get rid of the sulphur smell from cold water only in one sink?

In my powder room only, I have a strong sulphur smell that comes out of my cold water faucet only. I have a water filtration system for my house but only have this problem in one sink. I have ...
Abigail Nabors's user avatar
2 votes
1 answer
57 views

Calculating gas capacity with mixed sizes of black iron pipe

If I have a gas meter connected to 50' of 1" pipe and then 30' of 3/4" pipe, it doesn't seem correct to determine the amount of gas available at the end of the run based upon a chart that ...
ZippyTheSquirrrel's user avatar
2 votes
3 answers
10k views

Galvanized pipe life expectancy

USA, NW Oregon, single-story house with crawl space, built 1972. Background The house has the original galvanized piping in the crawl space and suffers from low water flow in two bathrooms. Static ...
Jim Garrison's user avatar
1 vote
1 answer
3k views

Vent Pipe Replacement In Attic

The cast iron portion of the vent pipe in my attic has rotted off. I need some guidance on how to go about replacing the cast iron portion with PVC. Particularly, I'm unsure of what diameter PVC I ...
nbatalla's user avatar
1 vote
1 answer
199 views

Calculating gas capacity with mixed sizes of black iron pipes

How do I calculate gas black iron pipe capacity when I have pipes of a bunch of different sizes connected together? Every single chart I found just assumes a long length of a single size. In ...
Ariel's user avatar
  • 1,926