PEX fastener terms -compression ring, crimp,clamp...
The terminology for the piece which is used to fasten the fitting to the tubing does not seem to be standardized amongst retailers. I'm confused by the non-standardized usages of the terms crimp and clamp; sometimes phrased as "crimp ring" and "clamp ring," as opposed to "compression ring."
Omitting the fitting that is inserted into an expanded tube which then shrinks back around it:
AFAIK there are:
1 COMPRESSION RINGS; made of copper, which use a unique tool and a gap gage to verify adequate compression. The ring is a solid band. Some are colored black to mark them as being for use with the obsolete polybutylene (PB) pipe.
2) CLAMPS, made of stainless steel, which use a different unique tool that ratchets until it is tight enough. See
3) Oetiker Stainless Steel Crimp Ring, which might use the same tool as 2 or not, I'm not sure. See:
Does "SSC" (stainless steel clamp) refer to just 2) or both 2) and 3) ???
I have also come across references to a fastener/tool where you have to "snip" a tab before using the tool to tighten it.
Using all 3 items (pipe, fitting, fastener) from one manufacturer is prudent, but since I have not decided which brand to use, I'd really like to see a table showing various manufacturers stuff, with the trade name they use, divided into the categories of fasteners.
Does anyone make plastic fittings usable with the clamp type fastener? Looks like Watts "Poly-Alloy" plastic fittings are only to be used with the Compression Rings. Their brass fittings can be used with either.
My acid water makes me want to go all plastic, but I think the skill level of the crimp fastener is easier to succeed with than the compression rings. And the tool is much cheaper.
You are giving me a headache......
It looks like you have done your homework,
Why worry about all of it....cause it is a hopeless cause.
none of this crap is standardized and its the wild west out there.....
So if the Expert at Lowes or Home Depot says its ok and is compatable with
what you want to do , you should listen to the experts...
Of course Zurn has a lawsuit going on right now....
and when it all falls apart in a few years it will be some one
its gonna be the plumbers problem.......
Progress or a Potential Pain?
I was many years ago a plumber in Terry's neck of the woods in King and Pierce Counties in Washington. We replaced many poly butyl installations with copper. My boss contstantly preached the virtues of sch L copper and that nothing else would ever be acceptable for residential/small commercial potable water supplies.
For the past 5 years, he has largely switched over to PEX. I am building my own residence and he has almost talked me into installing an all-home-run PEX system with a single manifold in the laundry room. His pro-pex position stems from no fittings in the walls and no bursting when pipes freeze.
I was looking at the Zurn compression ring fittings using the proprietary crimping tool with the go/no-go gage. Am I heading down a path of future destruction?
AcidWater, how are you going to install a workable system without any brass fittings? I know you can use copper for some fixtures, but how would you connect the inlet side of your shower valves if you do not use brass? But since acid is an issue, you cannot use copper anyway. How are you going to transition to your fixtures? Are you going to use compression angle stops with an insert directly on the PEX stubouts?
You all have piqued my curiosity. Better now than later...