[Digestion] Digestion Digest, Vol 19, Issue 1

[Carmine Bocchino]

Hello

I have used all the plastics you refer to and PVC is adequate.
PE is better but more expensive. PVC will do the job; ensure dry ends before 
gluing and allow the joints at least 24hrs to settle before using.

Carmine

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Subject: Digestion Digest, Vol 19, Issue 1

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Today's Topics:

   1.  plastic pipework (Chandler)


----------------------------------------------------------------------

Message: 1
Date: Mon, 5 Mar 2012 18:19:02 +0100
From: Chandler <chandlerhatton at simgas.org>
To: digestion at lists.bioenergylists.org
Subject: [Digestion]  plastic pipework
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<CAP=kLCJDQkdfkZi6NYxgYybjMxB+cubCu=YyUctMKMHUUV10LQ at mail.gmail.com>
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Hi all,


I am working to implement biogas in East Africa, and I?m curious about
whether there is a preferred plastic polymer for use in plastic biogas
pipework. Most affordable, readily available plastic pipes and fittings are
made from PVC (polyvinylchloride), PE (polyethylene), or PP (polypropylene).

   - Is one of these materials better than the other two for use in gas
   lines?  And is there a material that should be avoided for use in biogas
   pipework (i.e. due to chemical corrosion, UV damage, or creep?)

   - In particular, I am concerned about the accumulation of white
   (silica?) deposits in biogas pipework. Does the use of plastic piping
   reduce the buildup of this white substance? And very specifically, does
   this white substance accumulate on PP fittings?

Any thoughts on these two questions are very much appreciated.

Thanks,
Chandler
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End of Digestion Digest, Vol 19, Issue 1
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