Home Improvement Stack Exchange
Home Improvement Stack Exchange

Questions tagged [pipe-fitting]

66 questions
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2 answers

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 on male threads with no reference to female…
codechimp
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11
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1 answer

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." My confusion, though, is which two are considered the…
theforestecologist
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2 answers

How do I connect my sink to the drain in the wall?

I'm a real novice when it comes to plumbing. I've got a threaded 45 coming out of the wall (white pipe on the right) and an unthreaded black tailpiece coming down from the sink. How do I install a P-trap in this situation? The new sink is…
Michael Mior
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2 answers

Why can't I find a cleanout plug to fit my drain pipe?

Trying to cap a water line that connects to my sewage out line. I purchased a cleanout adapter with cap in 2" and 3" and one is too big and one is too small. I think I need a 2-1/2" connector. NOWHERE in my local brick-and-mortar stores can I find…
Stanley Jones
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4
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2 answers

What do I need to connect 1/2 and 3/8 vinyl tubing?

I am just trying to connect an 1/2” vinyl tubing (this one) to a smaller 3/8” version. I got this 1/2” to 3/8” barb reducer but it’s way too small and doesn’t fit. Why? Which part do I need instead?
divB
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Connecting 1” PVC to 1/2” PEX

We have a 1 inch PVC pipe going under the ground from the well, and sticks out near the house. I don’t know the technical term but I call it a spicket. You turn the handle and water shoots out. We have 1/2 inch blue PEX pipe for the house. I can’t…
Stephanie K
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2 answers

How to prep oval 1” copper pipe end for sharkbite fitting?

I have a 1” underground copper pipe in tight quarters, not good access. The pipe is not perfect and looks oval. Is there a tool I can carefully insert in a 1” pipe to get it round again? Trying to prevent ripping out a sidewalk. Would like to get it…
user1594257
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2 answers

How is this sewer vent pipe meant to be capped?

My house is connected to public sewer. There's a ~100ft setback between the house and the road, and in that area, there are two pipes I think are associated with the sewer. One is a white pipe coming out of the ground near the road that is well…
cr0
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1 answer

Draining into open pipe in basement

When I bought my home, the basement dehumdifier hose was just draining into an open wye off a drain pipe in the floor which also goes up to the kitchen sink drain. Since then, when I had air conditioning installed, the installer also put the drain…
Michael Mior
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3
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2 answers

Where is the one-eighth in 1/8-27 NPT?

Where is the "one-eighth" in 1/8-27 NPT? I know it has 27 threads per inch. I see references that 1/8" is the nominal pipe size, does that mean the hole inside the thread is 1/8" ID? Or something else?
kbyrd
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which valve fitting / adapter combination can i use to connect my kitchen faucet and undersink water filter to my cold water line?

I purchased an underink water filter: KOHLER Aquifer Under-Sink Double Cartridge Water Filtration System I was using the plastic connection that came with it: Connected like so: The top connects to my faucet (plastic male to female connection),…
user2285215
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Having issues fitting 1-14 UNF threads from a gas cylinder

I'm working on a DIY system at home that involves parts from different locations and industries, which means I'm running into many thread adaptor-related issues. I have a gas cylinder that I'm trying to attach something to (I have the cylinder as…
J H
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3 answers

Stainless steel NPT + Brass NPT = not a perfect fit?

I just completed laying irrigation piping (black poly) and by and large it seems solid. I do however have issues with the take-offs from my house's hose bibs, where I have metal risers going into the ground to meet the poly underneath. The "risers"…
Paul W
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Need name for handbasin fitting and sizing advice

I'm a newcomer to household plumbing and particularly have problems with the correct names for fittings etc. We have a leaky cloakroom handbasin. Directly on the basin outflow the ceramic is connected to the U-bend piece with a tatty rubber ring and…
PotatoCrisp
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1 answer

How can I install a utility spigot so it's oriented the right way?

I fitted new nozzle bibtap (same brand) onto new bibtap wall flange (same shop). I used PTFE tape, with Pipe joint lubricant (could not source Pipe joint compound) on both fittings. One fitted vertically, but the other, will not turn beyond what is…
Abu Galib
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