Traveler's toilet 711-M28 marine sanitation system-white complete set of independent fresh water system. Fresh water operation eliminates odors. The glass ceramic bowl is flushed with fresh water in the on-board demand system, so there is no unpleasant smell brought by the salt water flushing the toilet. The integrated anti-siphon vacuum circuit breaker can protect drinking water. Effective rim cleaning requires approximately one pint (0.5 liter) of fresh water per flush. No electricity is needed. An ideal alternative to recirculating toilets. There is no circulating chemical smell. The water level and flushing action are controlled by a single pedal control. The hemispherical seal can keep the smell in the can in the can. The storage tank is made of durable linear low-density polyethylene and has a capacity of 9.5 gallons (36 liters). The drain connection is a 1-1/2 inch (38 mm) hose insert. Connect a 5/8 inch (16 mm) hose to the exhaust port. The water connection is 1/2" (13mm) MPT.