Hot answers tagged

15 votes

How can I close a quarter turn valve?

That valve looks pretty old. In any case if the handle turns 90deg. and the result is the water is not shut off the valve is defective and needs to be replaced. That type of valve has a ball with a ...
RMDman's user avatar
  • 27k
13 votes

Can I pull ethernet cable through 1/2" pex?

Assuming it's got no fittings with sharp corners, probably. Use a vacuum cleaner to suck a string (or pulling tape) through, rather than fussing with a fish tape. Don't cut the tube and you might even ...
Ecnerwal's user avatar
  • 210k
13 votes

Elbow or just bend PEX pipe through wall

There are two ways of running PEX (generally) - the people who treat it like straight pipe and have a bazillion fittings, and the people who treat it like the flexible tubing it is, and have fewer ...
Ecnerwal's user avatar
  • 210k
13 votes

Why can't you use PEX between tub and shower valve and the spout?

The warning is near the beginning of the manual. Later, when discussing shower and tub connections on page 28, the manual says: Caution: Do not use Uponor AquaPEX piping to connect the tub and shower ...
manassehkatz-Moving 2 Codidact's user avatar
12 votes
Accepted

Is putting a pex tube underground and then through a concrete slab OK?

Sleeve It When running any tubing (PEX, ABS, PVC) through concrete you need to de-couple it, Even 6mil plastic suffices, but sill guard is better. A tubing sleeve (e.g. 1.5in ABS) like you propose ...
P2000's user avatar
  • 15.8k
12 votes
Accepted

Do sink shut-off valves have to be centered under the sink, one on left and one on right?

They do not have to be centered. It looks nice and organized but not a requirement. You want to make sure they are close enough to the faucet so the braided hoses that most people use today will reach....
JACK's user avatar
  • 79.8k
10 votes

In order to avoid shutting off water to the whole house, can I temporarily terminate a PEX pipe at a closed shut-off valve?

Yes that is fine. Plumbers use sharkbites as well. Just make sure the pex is fully pushed into the sharkbite shutoff. You could even leave them permanently - exposed plumbing is one of the better ...
Fresh Codemonger's user avatar
10 votes

Main Water Line coming into House leaking/rusted out - How to replace and with what?

Not PEX. Polyethlyene, PE, but not crosslinked - well water pipe is a fairly good search term. The 200PSI stuff is the most robust (thickest wall) I'd not go down to 100PSI (thinner wall, more fragile ...
Ecnerwal's user avatar
  • 210k
9 votes
Accepted

Should I re-do this cinched PEX connection?

I'd be less concerned about the squareness of the cut and more concerned about whether you've got the crimp ring on more than 1 barb. You've angled the two crimp ears to the same spacial area and ...
Fresh Codemonger's user avatar
8 votes
Accepted

Can polyalloy (plastic) pex fittings be used with both styles of attachment rings?

TLDR: Yes, either type of attachment ring can be used. At least in the USA, these products have to conform to standards which make this so. Additionally, some manufacturers specifically state this is ...
StayOnTarget's user avatar
  • 5,495
8 votes
Accepted

Can PEX be installed in sections?

You can do it a bit at a time. Of course, any bits that are leaking that you don't replace will continue to leak until you replace them. You can (or could when I was shopping, it was some years back) ...
Ecnerwal's user avatar
  • 210k
8 votes

What material pipe to carry water to a detached garage

I don't know California specifics, but "Polyethylene well water pipe" is a common material for direct burial installation - get the 200 PSI version for the thickest walls / most durability. ...
Ecnerwal's user avatar
  • 210k
8 votes

Main Water Line coming into House leaking/rusted out - How to replace and with what?

TLDR: Yes it's allowed, but with some caveats. Semi-local answer: (I am in Riverside county for reference). California Plumbing Code allows the following types of pipe for building supply piping: ...
Chris O's user avatar
  • 6,775
8 votes

Restoring collapsed buried pex line?

If the PEX is or can be stripped down to the point where there are no tight bends and no fittings then you can mechanically test for an obstruction. A electrician's fish tape will fit inside the tube. ...
Greg Hill's user avatar
  • 30.1k
7 votes

Should I upgrade to 3/4" pipe all the way to my new pex manifold?

Is the manifold 3/4? If you have easy access to do it, then you are correct that now is the time to do it.
longneck's user avatar
  • 21.2k
7 votes

Is copper piping required within a certain distance from a water heater?

Although copper may not be required, it is possible that PEX is prohibited. One reason for this would be building codes / regulations. For instance, the UPC states: 604.11.2 Water Heater ...
StayOnTarget's user avatar
  • 5,495
7 votes
Accepted

PEX pipe burst: what else needs to be fixed to prevent it happening again?

PEX pipe does not corrode or otherwise interact with copper or other materials the way dissimilar metals do. It's essentially an inert substance under normal circumstances. The bulges and darkened ...
jwh20's user avatar
  • 23.2k
7 votes

How can I create a plumbing disconnect for winterizing a cottage?

Is there an alternative that is better suited to this need? Yes, it's called a tap. They're installed in all your sinks and showers/tubs. At the lowest point of the plumbing you can access, install a ...
FreeMan's user avatar
  • 46.6k
7 votes

How can I close a quarter turn valve?

Often those handles are made with really cheap soft metal / alloy. They corrode and break so will "turn" while not turning the shaft. I have removed the handle and turned the shaft with an ...
Solar Mike's user avatar
  • 27.3k
6 votes

What brand are these pex threaded T connectors?

These are actualy "Qest" (pronounced "quest") brand fittings that were more popular 10-15 years ago (maybe further back). I remember in the early 2000's these were sold at Home Depot and Lowes back ...
JPhi1618's user avatar
  • 27.8k
6 votes

repiping house with PEX

I can answer the first 3 questions, having done a significant amount of research and a few plumbing repairs on the 3 houses I've owned, first with copper lines, second with pex "homerun" and ...
Fredric Shope's user avatar
6 votes

What material pipe to carry water to a detached garage

Ask the supply house if they have a waterworks division or if they can give the name of a local waterworks distributor. (Ferguson is a national waterworks distributor who happens to have branches in a ...
Greg Hill's user avatar
  • 30.1k
6 votes

Should I re-do this cinched PEX connection?

If it didn't leak and doesn't leak after you crimped it, it won't start leaking because the end cut is imperfect. If you were a wet-behind-the-ears apprentice for a plumber that gave a darn, sure, the ...
Ecnerwal's user avatar
  • 210k
6 votes

Very low hot water flow in single fixture

You can reduce the amount of drywall you destroy by getting a fiber optic snooper. Should be able to use a 1/4" hole every few feet. Is there access to the valve? I think these work with a bi-...
Sherwood Botsford's user avatar
5 votes
Accepted

Plumbing rough-in pressure test PSI

According to IRC, for supply system testing. You have to test using the maximum working pressure (80 psi) of water, or 50 psi of air. And you have to maintain the pressure for 15 minutes. For air ...
Tester101's user avatar
  • 131k
5 votes

Galvanized pipe life expectancy

40-50 years is a fair lifespan. I've seen plenty of houses with galvi that was 60+ years old without it failing, the real issue to me is if you want to wait until it fails to replace it. Not greatly ...
lowercaset's user avatar
5 votes

What is the advantage of PEX pinch clamp vs. crimp rings?

I have been plumbing for 14 years,and I switched to using stainless rings almost exclusively about 5 years ago. Being able to use just one tool from 3/8" up to 1" was too much of an advantage to ...
Derek's user avatar
  • 51
5 votes
Accepted

PEX: Is it worth replacing crimps with push connections?

God no! I've had two leaks, out of literally tens of thousands crimp conections. Both leaks were installer error. One time my tool suddenly went out of calibration which I could feel in the action and ...
Joe Fala's user avatar
  • 6,334
5 votes
Accepted

Does PEX-B support expansion fittings?

According to this pamphlet from Zurn, PEXa (Engel Method), PEXb (Silane Method) and PEXc (Radiation Method) are not ranking systems; they are manufacturing designations. Zurn utilizes a patented ...
M-Pixel's user avatar
  • 166
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
  • 27.3k

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