About this macerator & waste pumps
12V RV Macerator Pump, 12 GPM Marine Waste Water Sewage Chopper, Overcurrent Thermal Protection, 3m Lift 100m Run, for Caravan Motorhome Grey Black Tank
A noisy, underpowered pump is one of the most common regrets owners mention after their first season on the road, and a pump that quietly does its job without you thinking about it is worth paying attention to before you buy. This pump is a 12V macerator pump aimed squarely at emptying a grey or black waste tank, and its spec sheet is built around a rated flow of 12GPM (about 45.4 litres a minute).
Chopping the waste stream before it leaves the tank is the whole point of a macerator over a gravity valve: solids get cut down small enough to pass through a narrower discharge hose, which is what turns a slow, wide-bore drain into a job measured in minutes rather than the better part of quarter of an hour.
At a 12 GPM discharge rate, a full waste tank is finished well before you'd get through the equivalent job with a plain gravity valve. The thermal overcurrent cutout is the detail that matters most in everyday use, since a macerator is far more likely than a fresh-water pump to meet an occasional lump or blockage in the line, and it's what stops the motor burning out if that happens rather than pushing through it.
At £69.99, it's priced against dedicated caravan disposal points and cassette-emptying kits — for anyone who tours regularly and doesn't want to be tied to specific waste points, the time saved at each stop adds up over a season.
