The 51-Series is our Heavy-Duty water pump. It provides high volume water go with the flow with reduced pump cycling, thanks to the large five-chamber diaphragm. These models are designed to run on water systems without a accumulator tank vital, and as much as five fixtures! Additionally it is suited to be used with a holding tank water system, as is also found in a boat, RV or remote cabin. It provides as much as 5.0 gallons per minute. The 51-Series pumps are self-priming, and can run dry without damage. The internal bypass feature allows excess water to recirculate inside the pump, getting rid of the need for an accumulator tank. This automatic demand water system pump has a built-in pressure switch, which mechanically starts and stops and stops the pump when the faucet is opened and closed. They are easy to install, service and winterize.
Positive displacement pump
Can run dry
Quiet operation
Easy connect fittings
Industry standard mount pattern
Boat Plumbing, Boats & Equipment, Fishing, Fishing Watercraft & Trolling Motors, Water Pressure Pumps
MaxTough 12v Water Diaphragm Pump 20L/min 5.5Gpm 60Psi Sprayer Caravan RV Boat
Positive displacement pump
Can run dry
Quiet operation
Amazon.com Price: $109.99 (as of 13/04/2017 05:15 PST- Details)









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