Whale Gulper 220 12V Grey Waste Water Pump

The Whale Gulper 220 is a 12V gray waste water pump moving 3.7 US gallons per minute, running without a filter.

No filter is the claim worth understanding, because it changes the maintenance a shower sump needs. A conventional waste pump depends on a strainer that clogs with hair and gel and has to be pulled and cleaned. The non-choke valves and large single diaphragm here pass that material through instead.

It will run dry without damage and pump a mixture of air and water, which is exactly what a shower sump delivers at the end of a cycle. Most pumps handle that badly. A diaphragm pump that can run dry means nobody has to switch it off at the right moment.

Gulper valve technology is what makes the filterless operation work rather than being a marketing description. It moves up to 3.7 US gallons or 14 liters per minute on 12V, sized for shower and gray waste rather than bilge duty. Explore more bilge and water pumps.

• Runs without a strainer to clog with hair
• A conventional waste pump needs its filter cleaned
• Runs dry and pumps air and water together
• 3.7 US gallons per minute on 12V