On 4/13/2012 7:48 AM, Dave wrote:
On Fri, 13 Apr 2012 07:22:27 -0500, Leonlcb11211@swbelldotnet
winter I was able to shut off water to the out side hose bibs from the
manifold and open the bibs to drain the water before the freeze. I had
running water for all of the i other nterior faucets.

Is there any need to drain PEX? (Despite it's resistance to freezing)

The difference between copper, and other rigid piping/cpcv, and PEX is
in the amount of expansion and contraction it will allow with thermal
changes.

PEX has a much higher expansion coefficient and is thus more resistant
to bursting when frozen, although that is not an infinite ability ...
particularly with regard to the fitting points and connections.

Although there is much more room for error with regard to draining, the
weakest points would be at fittings and connections, which basically
means prudence dictates treating it as if it would be advisable to drain
if the thermal conditions indicate.

--
www.eWoodShop.com
Last update: 4/15/2010
KarlCaillouet@ (the obvious)
http://gplus.to/eWoodShop