[TheForge] pex-al-pex is usable for compressed air systems.

[terry l. ridder]

hello;


to anser the question that i asked in a separate posting, "can pex be
used for air systems?" the answer is that plain pex is not suitable for
compressed air systems. what is usable is pex-al-pex. what is
pex-al-pex? the answer is here:


http://www.flexalpex.com/

<begin quote>
What is PEX AL PEX ?


PEX AL PEX is aluminum tubing with  coextruded cross-linked polyethylene
layers on the inside and outside .  Through a special process  links
between polyethylene macro-molecules are formed to create essentially
one large molecule of polyethylene. This three-dimensional molecule is
more resistant to temperature extremes, chemical attack and creep
deformation which makes PEX ideal for use in hot water applications.
Typical cross-linking levels in pipe are 65%- 89%. For more than three
decades, PEX (or XLPE) has been used extensively in Europe for hot water
heating and plumbing applications.
<end   quote>

i have no idea of cost comparison with plain old black pipe.

a quick google finds this;

PEX AL PEX 1/2" tubing pipe 600' BEST DEAL
Tmax=203 ºF PN=150PSI-ASTM F1282
PRICE: $185.00

PEX AL PEX 5/8" tubing pipe 300' FREE CLIPS
BONUS FREE BAG OF CLIPS - Pipe uses 3/4" fittings
PRICE: $150.00


further research is required before a good decision may be made.

-- 
terry l. ridder ><>