Series 51 12V Diaphragm Pump Max Flow 19LPM @ 70PSI - NEW Pressure Switch

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2 Year Warranty


Seaflo Series 51 is a continuous duty 12 volt on demand positive displacement pump.

The 51 Series is a durable continuous-duty automatic water system pump. Screw fittings make installation and service easy. It provides up to 19 litres per minute.

The New Series 51 has a new, sophisticated electronic pressure system automatically adjusting pressure from 17 to 70PSI.

The large 5-chamber diaphragm, provides high volume water flow with reduced pump cycling.

This automatic water system pump is designed for boats and RVs with multiple fixture water systems. 

This model is designed to run on water systems without an accumulator tank.

The innovative and efficient design allows for the quietest operation in its flow-class. The steel mounting with rubber feet absorb vibration and reduce noise. The 51-Series pumps are self-priming, and can run dry without damage. They are capable of self-priming up to 1.8 metres.

This automatic demand water system pump has a built-in pressure switch, which automatically starts and stops and stops the pump when the faucet is opened and closed. They're easy to install and service.


Model Series Voltage Open Flow Shut-off Pressure Max Draw Control Type Valves Diaphragm Fittings Wire Connections
  SFDP1-050-060-51   Series 51 12V 5/19 70/4.8 15 Amps Switch EPDM Santoprene

1/2" Pre-Filter

1/2" BSP X 12mm hose tail 



Product Data Comparison for Seaflo Diaphragm Pumps

Model Volts Amps Fuse (amps) LPM PSI Ports (inch) Length (mm) Width inc Base (mm) Height (mm) Weight (Kgs)
  Series 22 12 6 9 5 100 3/8" (10mm) Hose Tail 187 98 72 1.10
  Series 33 12 8 10 11.6 45 1/2" BSP 202 130 123 1.92
  Series 42 12 6 10 9.5 55 1/2" BSP 230 125 111 1.90
  Series 51 60PSI 12 15 20 19.0 60 1/2" BSP 216 146 131 2.48
  Series 51 70 PSI 12 15 20 19.0 70 1/2" BSP 216 146 131 2.48


SKU SFDP1-050-070-51
Barcode # 2000000009186
Brand Seaflo - Original and Genuine
Shipping Weight 3.2000kg
Shipping Width 0.160m
Shipping Height 0.140m
Shipping Length 0.290m
Shipping Cubic 0.006496000m3
Unit Of Measure ea

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