24 votes
Accepted

What makes a tee "sanitary"?

A sanitary tee has a subtle curve down, I suppose in hopes of keeping your waste going in the right direction.
Aloysius Defenestrate's user avatar
21 votes

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

Looks like minor leaks, compounded by mixing galvanized pipe and copper/bronze valve without using dielectric couplings between dissimilar metals. Honestly, any plumber installing NEW galvanized pipes ...
Ecnerwal's user avatar
  • 215k
13 votes

Water pipes come through the floor too far from the wall for the vanity cutout

Typically you cut a hole in the bottom of the vanity to accommodate the location of the pipes.
Ecnerwal's user avatar
  • 215k
12 votes

Connect 3/8-16 bolts at 90 degrees

Find someone with a drill press and a 3/8-16 tap. Take a cube of steel, drill holes in adjacent faces, and tap them for the thread size.
LeeG's user avatar
  • 257
12 votes

Is tightening this nut impossible?

The installation instructions show a rubber washer in that T connection to the toilet inlet, so once you have it finger tight, it should only need another 1/4 turn or so with the wrench to make a seal....
Armand's user avatar
  • 4,428
11 votes

garbage disposal relocation

Good pictures. You have an unusual configuration for that drain. Typically, there is only one drain line coming from the wall into the kitchen cabinet. That would have one trap and upstream of the ...
Jeff Wheeler's user avatar
  • 3,382
11 votes

Connect 3/8-16 bolts at 90 degrees

Pipe thread and screw thread are different even if you could find the right size elbow. What you might have to do is take a threaded coupler or two and have them welded together. I've never seen a ...
JPhi1618's user avatar
  • 27.9k
10 votes
Accepted

What is the proper method to install a "close" metal pipe nipple?

Installing the close nipple is done by starting the nipple into the first fitting by hand. Then start the second fitting. Make sure that the suitable teflon pipe thread tape is installed on both ends ...
Michael Karas's user avatar
  • 64.6k
10 votes
Accepted

Equivalent of union for rigid conduit installation?

What you're after, traditionally, is a three-piece coupling The fitting you're after to join a pair of rigid conduits where you can't turn one or both conduits is called a three-piece conduit coupling....
ThreePhaseEel's user avatar
10 votes
Accepted

Will a sharkbite fitting fail catastrophically?

3 foot section of copper pipe that had developed a pinhole leak. ... Our water here (Vancouver BC) is really soft. While it could be the fitting, my initial reaction to this confluence of factors is &...
Ecnerwal's user avatar
  • 215k
9 votes

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

100% galvanic corrosion, "Pipes in the house are a mix of copper, galvanized, and pex", different metals cause corrosion. You should stick to one type of metal in your pipes or use pex. **...
binaryOps20's user avatar
9 votes

Are unions considered harmful to plumbing?

The IFGC doesn't allow unions in concealed spaces because of their leaking proneness. See the IFGC's 404.5 commentary. You're right to try avoiding their use, but you're not describing a concealed ...
popham's user avatar
  • 10.4k
7 votes
Accepted

How is a pipe nipple's length measured?

I looked at some manufacturer's documentation. Short answer: the stated size is the total length of the pipe nipple including the threaded sections. This does appear to be consistent among ...
StayOnTarget's user avatar
  • 5,545
7 votes
Accepted

Connect 3/8-16 bolts at 90 degrees

One approach that might work is to use an angle bracket at each corner, held to the threaded rod with two 3/8" nuts on each end.
Mark's user avatar
  • 3,773
7 votes

How can I connect a GE LP clothes dryer to a portable LP tank?

Listen to the manufacturer. Don't do it. A gas dryer uses gas at a much higher rate than a 20 lb tank can deliver. You would initially get a nice hot flame and decent drying, but within minutes the ...
MTA's user avatar
  • 11.3k
6 votes

Connect 3/8-16 bolts at 90 degrees

Do think you will have to make up something. Street elbows are for plumbing and thread size/type does not match. I would use a long type of nut(as shown in @JPH1618's answer), and cut it in half at 45 ...
crip659's user avatar
  • 24.5k
6 votes

Connect 3/8-16 bolts at 90 degrees

There is such a thing as a hinged threaded standoff, that is basically a non-rigid version of what you're looking for. (No endorsement implied, in fact the linked company doesn't even carry them in ...
jasonharper's user avatar
6 votes
Accepted

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

The device you have linked to is for PEX pipe, which needs special crimpers. It is not deigned for vinyl tubing. You need one of these: barb hose reducer (Admittedly, the link is for a set of 25, but ...
Triplefault's user avatar
  • 7,644
5 votes
Accepted

How is a "ground joint union" different from any other union out there, and why are they specified for gas service?

A ground joint union has an angle cut (ground) into the union where the two sections mate. This provides more surface area at the joint, and allows the joint to seat more easily. This is in ...
Tester101's user avatar
  • 132k
5 votes

Approved weatherproof way of connecting SER into panel

The high page rank since this question was asked indicates that many either want to know the answer, or like the drill-out hack. (Ahem, "adaptation.") Electricians have been asking for a ...
u2n's user avatar
  • 161
5 votes
Accepted

Is there a Plastic Barb to PVC Pipe pipe fitting?

Sometimes the hose barb fittings on a pump or device are removable so you can swap them for another fitting that suits your use. Here, it looks like the hose barbs are molded into the plastic of the ...
Fredric Shope's user avatar
5 votes

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

Yes, you have small leaks causing rust. See how the rust practically flows like water in this picture? Overall, galvanized pipe should be avoided nowadays as there are much better options such as pex....
MonkeyZeus's user avatar
  • 16.6k
5 votes

Remove plastic fitting with teeth from copper pipe

On how to remove the old fitting. Grab the fitting in your fist and slowly rotate your fist around the pipe while pressing the fitting against the side of the pipe. You are applying the side pressure ...
Programmer66's user avatar
  • 2,744
5 votes

Remove plastic fitting with teeth from copper pipe

Use heat. Soften the plastic enough to easily deform it. An electric heat gun -- basically, and industrial-grade hair dryer -- is useful for lots of things. One thing it's useful for is getting an ...
Greg Hill's user avatar
  • 30.6k
5 votes

Remove plastic fitting with teeth from copper pipe

Literal blood and sweat (but not quite tears) later - the additional tube is off the copper pipe. I rang the shower company, those teeth were in there to stay - they told me the only way to get it off ...
Emily Butcher's user avatar
5 votes

How do I Loosen a Stuck Threaded Brass Fitting?

You need two pipe wrenches - one for the pipe and one for the fitting so you don’t damage the other pipes. However, I would likely go with a solder fitting to get to what you want if that is so tight.
Solar Mike's user avatar
  • 27.4k
5 votes

Are unions considered harmful to plumbing?

Unions are fine. You see them in plumbing work all the time. It's impossible to plumb some items without a union. What you want to avoid is unnecessary unions. If there's a way to plumb it with fewer ...
KMJ's user avatar
  • 11.4k
5 votes

What makes a tee "sanitary"?

A sanitary tee has a curved center section to allow smoother, more efficient liquid flow. In drainage systems, it is primarily used to connect horizontal drains to vertical drains. The center ...
revive's user avatar
  • 179
4 votes

Light fitting won't work with more than one bulb in place

Your fixture is made to use a set of 4 x 4W LED bulbs (for a total of 16W), but you're trying to use 50W halogen bulbs instead. This is extremely unsafe, because the halogens give out orders of ...
brhans's user avatar
  • 6,831
4 votes

What type of compression fitting do I need?

You don't need the compression nut. With that water hose, you should connect it directly to your water supply shutoff valve. The compression nut is used when you have a copper pipe as your water ...
longneck's user avatar
  • 21.3k

Only top scored, non community-wiki answers of a minimum length are eligible