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Default Shear strength of screws

On 4/13/12 8:29 PM, wrote:
On Fri, 13 Apr 2012 15:42:27 -0400, "Mike Marlow"
wrote:

wrote:
On Fri, 13 Apr 2012 07:33:16 -0400, "J. Clarke"
wrote:

In ,
says...

On Thu, 12 Apr 2012 21:57:59 -0400, "m wrote:

Did my house in PEX but I will never use those sharkbite fittings.
Too expensive and I don't trust them.

The pinch ring fittings work fabulous and never seen one leak in
four houses, all done by amateur labour.


As long as you use good pinch rings and the proper tool. My one
reservation with the rings is how long will they last, and what
happens if one corrodes in the wall? (say a mouse ****es on it, or
some other chemical reaction weakens the clamp material)

The rings are copper, they should be at least as resistant to mouse
pee as copper pipe, and there's a lot less area exposed to mouse pee.

-----------
"Mike Marlow" wrote in message
...
Ugh! I just can't warm to those. I've used them and I realize
their value,
but I just cannot get over the movement of the joint with them.




I thought the clips were aluminum or steel. Are they tinned copper, or
are yours different from what I see around here?


Not sure Clare. I just bought what Home Depot had (Sharkbite). They did go
together just as advertised, and they are indeed leak proof, so no complaint
on that end. But - they don't make a rigid run. The line in and the line
out have quite a bit of play in them so the entire run is somewhat floppy.
Probably will never leak, but it will always be floppy unless you put in
some additional hangers. For a quick fix - I use them. For something more
permanant - I sweat a joint.

Were you talking about sharkbites or PEX clamps??
The sharkbites are generally BRASS, not copper - and the pex clamps
appear to be either steel or aluminum. I'm thinking steel, but I've
never checked - and never actually installed one. PEX clamps, if loose
enough to allow any movement on the fitting WILL leak. If not today,
real soon.


http://www.watts.com/pages/learnAbou...p.asp?catId=70

The cinch-clamps are steel and generally used in trailers and double-wide
type prefab homes. That's not what I use and I've been told to stay away
from them by the plumbing supply places.

Crimp rings are sold copper and will last as long as anything else, for
all practical purposes. Pex crimp rings allow for rotation of the tubing
around the fitting but will not leak.


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