Another Pex question
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Another Pex question (by Bit [IN]) Jul 21, 2021 12:08 PM
       Another Pex question (by dave [CA]) Jul 21, 2021 12:53 PM
       Another Pex question (by Jason [VA]) Jul 21, 2021 1:14 PM
       Another Pex question (by GLR [MA]) Jul 21, 2021 1:44 PM
       Another Pex question (by dino [CA]) Jul 21, 2021 3:36 PM
       Another Pex question (by Vee [OH]) Jul 21, 2021 3:53 PM
       Another Pex question (by Robert J [CA]) Jul 21, 2021 5:32 PM
       Another Pex question (by Sisco [MO]) Jul 21, 2021 5:41 PM
       Another Pex question (by Robert,OntarioCanada [ON]) Jul 21, 2021 6:30 PM
       Another Pex question (by Bit [IN]) Jul 22, 2021 10:07 AM

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Another Pex question (by Bit [IN]) Posted on: Jul 21, 2021 12:08 PM


Think I am getting it worked out I need to use the crimping tool for the pex in my house rather than the expander. Does that mean I have type Pex B?

The lines say "cts-waterpex by watts sdr-9".

Q: So what I need to know now is if I have a fitting using a plastic t-joint, cut one side of the line and cut off one of the bands so I can remove the line can you put another joint and crimp ring in that piece of line or do you have to cut a few inches off so it is a fresh end?

I basically need to cut a section off using a elbow and replace it with a T joint but not sure if I can reuse the same ends after removing the elbow.

Another Pex question (by dave [CA]) Posted on: Jul 21, 2021 12:53 PM

i ain't no plumber,.....havent stayed in a holiday inn or played one on tv.

i don't like pex

probably not as reliable as well sweated copper. Plumbers seem to like it cause it's fast.

always use new pex fittings AND cut lines back to clean sections. splice in new line as necessary as you would with


the critical part is the proper crimping of connections. don't use cheap tools,....get the feel for what is good and not so good. re-do what is not so good BEFORE yu close up the work.

Another Pex question (by Jason [VA]) Posted on: Jul 21, 2021 1:14 PM

Are you using the pinch or crimp style rings? If using the pinch (which is what I prefer), you can easily take it off with a screwdriver and you can reuse the pipe without having to cut it. With the crimp style, I believe you have to cut that section of pipe off and it can't be reused. Then again, I'm not a plumber either.

But yes, the kind you're using is type B. And I would spend the extra $ on brass fittings instead of plastic.

Another Pex question (by GLR [MA]) Posted on: Jul 21, 2021 1:44 PM

I forget which is which Pex-A vs Pex-B. One is extremely rigid, your going to be making very long sweeping turns or elbows. The other , (uponer) is very flexible and can make tighter turns (not complete 90 degrees, but closer).

The ones you find in the box stores are rigid. Plumbing supply spouses generally have both.

Good luck

Another Pex question (by dino [CA]) Posted on: Jul 21, 2021 3:36 PM

Ask a plumber, maybe Robert J is around to respond.

Problem though is many people in trades are worried that even if they correctly provide whatever info is requested, the non-professional will make other errors that they never asked for help on.

On something as important as plumbing system, I only deal with the simple repairs that can't bite me in the a$$ if there is a problem.

Another Pex question (by Vee [OH]) Posted on: Jul 21, 2021 3:53 PM

Use the joining method suggested where you purchased the tubing, crimp works great - the rail, marine and airline industry has used this over 30 years for water, oil and gas. If you make a mistake after crimping on the incorrect fitting like a -tee- I use a battery angle grinder to cut the ring and spread the cut with a medium screwdriver to allow removing the tube-fitting joint, then cut off about 1 inch and reset with the correct fitting and crimp ring - the cutoff ring is copper scrap. I home run everything to a accessible location and use the preformed elbow wraps - secure them with friction tape so they can not jiggle loose while making corrections as described earlier, label all your zone valves to make repairwork in 10 years easier, I often use a single wrap of white tape for first floor fixtures and 2 wraps for 2nd floor marking and so on....

Another Pex question (by Robert J [CA]) Posted on: Jul 21, 2021 5:32 PM

While I'm a licensed plumbing contractor, I've been around before PEX was popular. I've seen so many failures due to:

a) using the wrong clamps

b) using the wrong ring

c) using the wrong Expansion Sleeves

d) having minerals or chemicals in the water that attacked PEX components.

I've seen PEX systems fail due to these reasons and the damages and the repairs out cost any savings using PEX over Copper Pipes and fittings.

I have several ProPress Copper/Bronze crimping tools used in copper pipe installs. While the Viega Propress fittings cost 3-times more than stander copper sweet fittings, they are over twice as thick and last 60 years.

There was a public pool that had a damages 2" copper pipe. Plumbers couldn't get the fittings to sweet in place due to water being forced from the pool drain. 10 hours and the job still had leaks. I showed up with my ProPress tool (I have corded and battery operated crimping tools). In less than 5 minutes I had replaced and connected the new pipe using Viega fittings. A 2" fitting takes around 30 seconds to connect. Soldering it would have taken around 20 minutes.

Another Pex question (by Sisco [MO]) Posted on: Jul 21, 2021 5:41 PM

Type A uses expansion rings on joints. Type B uses crimp fittings.

I would cut so as to have a fresh end on a crimp fitting, largely because I would likely butcher the pipe getting the old fitting off.

Another Pex question (by Robert,OntarioCanada [ON]) Posted on: Jul 21, 2021 6:30 PM

Pex B uses a crimping tool where Pex A is expanded then the fitting is installed before the Pex B pipe shrinks back to normal size where Pex B the fitting is installed first then a crimping tool tightens pex as the diameter of Pex B does not change but the fitting diameter is smaller. A lot of care to before the fitting is correctly installed where a special gauge is used. Pex A is mainly sold at plumbing supply operations along special expansion tool which is battery operated. Contractors prefer Pex A as easier to work with along with can be used in a commercial building as well as residential. View some videos on how to work with Pex then can learn how Pex is installed along with a transition to copper pipe.

Another Pex question (by Bit [IN]) Posted on: Jul 22, 2021 10:07 AM

Thanks for the tips all.

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