The thing that makes the basic Jabsco electric toilet (37010 Series) noisy is the rubber impeller intake pump built into the base. Quieter models use remotely mounted diaphragm pumps. The Raritan Sea Era which was designed to be an improvement to the Jabsco 37010 series uses an on toilet diaphragm pump and so it is quieter than the basic Jabsco.
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Parks Masterson
Retired from Hopkins-Carter Marine Supply
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