Steve Lusardi wrote:
Peggy,
I need a series of 1.5" ball valves and other toilet and holding tank
plumbing items for waste handling.

Why do you think you need ball valves in sanitation system plumbing?
There's not a lot of applications for 'em.

What else do you think you need?

Please recommend for me the best material
for waste handling.

For most applications PVC or marelon. Anything but metal.


--
Peggie
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Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://shop.sailboatowners.com/boat_odors/