Each tank features a nominal wall thickness of 0.30 in. (7.6 mm) to
control odor which would otherwise permeate through the walls. NPT
openings for vent, fill, and pumpout are standard.
Refer to the diagram on the right. The position of the vent
is the same for all waste tanks. The fill and pumpout position
(dimension D2) varies for each tank, and is provided with the tank dimensions below.
Federal Regulation 33CFR159, which incorporates EPA standards for
water pollution control, governs the design, construction, and
certification of marine sanitation systems. Boat owners and operators
are responsible for making sure that each sanitation device complies
with the requirements of 33CFR159.
All Moeller waste tanks meet the material and pressure specifications for sanitation tanks as called out in the federal regulations.
*21CFR177.1620 Code of Federal Regulations TITLE 21 FDA
Subchapter B,
“Food for Human Consumption, Indirect Food Additives--Polymersâ€