Re: Coil Form needed 2

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Arpit Thomas" <arpit-at-inzo-dot-org> 

3 types of pvc pipe i've seen . PRessure pipe- comes in schedule 40, 80 or 
120 in the USA, in verious 'classes' in australia, where class number x 100 
= kpa pressure rating.

THen youve got DWV - drain waste vent pipe- thinner walls, white pvc, no 
pressure rating.

LAstly you have very thin green dwv pipe. I believe it's called 'cellular 
core.'

THis is what i've seen.
Research says that green is typically used for sewers

http://www.ppfahome-dot-org/pvc/faqpvc.html
may interest some of you.
*********** REPLY SEPARATOR  ***********

On 19/05/2004 at 8:22 AM Tesla list wrote:

 >Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >
 >
 >The water pipe PVC is formulated to withstand much higher water pressue,
 >ie,
 >100 PSI, while the green sewer pipe formulated is for drainage and there is
 >no high pressure present in drainage applications.
 >
 >Dr. Resonance
 >
 >-at-comcast-dot-net>
 > >
 > > What makes the green sewer pipe different? I see this in the larger
 >sizes
 > > and it seems different than the white pvc, harder and heavier.