http://www.pumpbiz.com/info/index.cfm?fuseaction=pump_u
see item #6 (quoted here)
Plastics
UHMW PE (ultra high molecular weight polyethylene) is nearly
chemically inert, has great impact strength, abrasion resistance
(sliding), toughness, lubricity. It is a hybrid of the standard PE.
PP
[EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, January 20, 2005 2:47 PM
Subject: [Biofuel] RE: appleseed processor and PVC
Ken, et al;
So from all the submission on the question of using PVC pipe rather than
iron in the appleseed processor it seems that the failures are due more to
UV
I would not think that there has ever been a uv failure of a pvc part on a
appleseed processor..uv breakdown takes quite a bit of time is not going to
happen overnight or should i say overday. most appleseed processors are
kept inside.. and almost all pvc parts are enhanced with uv
]
To: [EMAIL PROTECTED]
Sent: Thursday, January 20, 2005 2:47 PM
Subject: [Biofuel] RE: appleseed processor and PVC
Ken, et al;
So from all the submission on the question of
using PVC pipe rather than
iron in the appleseed processor it seems that the
failures are due more to
UV than
Dana,
PVC does have adverse effects when exposed to some chemicals. I know from
working with Poly (unsaturated-monomers) that the PVC will
in very short order begin disolving and gumming-up (so to speak) making the
valves difficult to turn until they finally break. This
is evident not only in
