Thread: PEX clamps
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Don Young Don Young is offline
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Default PEX clamps


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I had the opportunity to work with PEX for the first time last week.
I personally dont much care for the stuff. I want solid pipe in my
house. However a friend is building a summer cottage and dont know
anything about plumbing. I said I'd give him a hand. He was talked
into PEX at the building supply store. I suggested he return the
stuff and get copper but he said that he was told that the PEX wont
crack if it freezes. I have serious doubts about that being true.
Even if the PEX itself dont crack, the fittings will.

Anyhow, he said he wanted to use it, so I had to learn how myself
since I never used it. He did not have the tool to tighten those
clamps and the tool was $100 for EACH size (1/2 and 3/4). So instead
of using them, he returned them and bought some snap in plastic
fittings that hold the pipe tight once it's pushed in. Seeing those
things made my skin crawl. How in the heck that can be considered a
tight fitting is beyond me. He does not have the well drilled yet so
I wonder if that will hold up or not. He just wanted to get the pipes
in the walls so he could sheetrock them.

Anyhow, when I looked at those tools to crimp the rings in the store,
I saw there are two different tools and two different types of clamps.
One clamp is simply a ring of steel that apparently just gets smaller
once it's in the tool. The other clamps have a piece that sort of
overlaps on the edges and looks somewhat like an automotive hose
clamp. That left me asking which is better, and why? Come to think
of it, why cant hose clamps be used rather than spending all that
money on those tools?

Like I said earlier, I dont put any faith in PEX. To me it seems like
plumbing a house with garden hoses. I'll stick to real metal pipes
for water supply and pvc for drains. I run a farm and use garden
hoses for livestock water tanks, in which they are left on all the
time in warm weather. I have seen far to many of these garden hoses
split and blow up outdoors. Of course outdoors is not as bad as
indoors. PEX might be a little stiffer, but it still is a hose, not a
true pipe. Of course these days everything is plastic and everyone
wants to save a buck. Although in this case the PEX was cheap but
those snap in fittings were close to $5 each. I think copper would
have been comparable in price and a much better choice, but each to
their own......


Hose clamps will not develop nearly enough pressure for a proper connection
with PEX tubing. The crimpers can generally be rented from rental services
or the people who sell the PEX.

I remember when plumbers said nothing would last except galvanized supply
pipe and cast iron drain pipe with oakum and lead joints and I have
installed my share of both. I am pretty sure that electricians thought Romex
cable was not near as safe as a good knob-and-tube wiring system. Just look
how close those wires are together with nothing but plastic between them!!

I understand your concerns and even share them somewhat, but I really think
Pex will turn out fine if properly installed. I don't know if you have
experienced pinhole leaks in copper pipes, but I had one in my water heater
closet and have seen a lot under ground and in concrete.

Don Young