WATER AND HOLDING TANK CATALOG L165ht 0401srf Telephone: (800) 352-5630 530 Orange Street, P.O. Box 1157, Millville, NJ 08332 USA Telephone: (856) 825-4900 FAX: (856) 825-4409 e-mail: [email protected] www.raritaneng.com

Raritan offers over 200 sizes and shapes of only the best quality, extra thick-walled, 3/8” (.9cm) minimum thickness, seamless polyethylene holding and water tanks. Polyethylene is the only choice for sewage holding tanks because urine is highly corrosive. Polyethylene tanks won’t corrode, leak, shrink, bulge or crack under the weight of sewage and also won’t permeate with sewage odor. Installation diagrams have not been included because “one size fits all” installations don’t fit all boats. Raritan will help you select the best tank location for your boat, the right size tank, and the best way...

ODOR CONTROL IN HOLDING TANKS It really IS possible to have a completely odor-free system! You’ve probably read or heard, over and over again, that the key to odor control is the “right” hose, that the “wrong” hose permeates with sewage and causes the system to stink. That’s folklore…a little truth coupled with a lot of misunderstanding. The real key to odor control is in knowing how to incorporate proven sewage management principles—the same ones used in composting and sewage treatment—into the installation of the entire system. What very few people in the marine industry have learned, and why...

In the holding tank, the key to odor control is the vent line; it must allow a free exchange of fresh air for the carbon dioxide generated by the sewage. Therefore, those bladder tanks which have no vent are all but guaranteed to stink; there’s no source of air into them at all. Boat builders, boat owners and boat yard personnel who install holding tanks have always viewed the vent line only as a source of enough air to allow the tank to be pumped out without collapsing and as an exhaust for methane. (Many even believe methane—which in fact is odorless—to be the source of odor.) Some take the...