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51-Series Diaphragm Water Pumps

51-Series Diaphragm Water Pumps

(1 customer review)

The 51-Series is our Heavy-Duty water pump. It provides high volume water flow with reduced pump cycling, thanks to the large five-chamber diaphragm. These models are designed to run on water systems with no accumulator tank necessary, and up to five fixtures! It is also suited for use with a holding tank water system, as may be found in a boat, RV or remote cabin. It provides up to 5.5 gallons per minute. The 51-Series pumps are self-priming, and can run dry without damage. 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 are easy to install, service and winterize.

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Description

Features & Benefits

  • Positive displacement pump
  • Can run dry
  • Quiet operation
  • Demand Pump
  • Easy connect fittings
  • Industry standard mount pattern
  • Built-in thermal protection

Typical Applications

  • Agricultural Spraying
  • General Industrial
  • Automotive
  • Marine/RV
WATER PUMP
Type
5 chamber positive displacement diaphragm
pump, self priming, capable of being run dry
Mode
Demand
Liquid Temperature
140°F (60°C) Max.
Priming Capabilities
6 feet (1.8 m) suction lift
Max Pressure
60 PSI (4.1 bar)
Inlet/Outlet Ports
1/2″-14 MNPT
Weight
7 lbs (3.17 kg)
MOTOR
Duty Cycle
Continuous
Leads
16 AWG, 4.5″ long with/Leads
2-Pin connector
Voltage 
12v/24v

 

  • Heavy-Duty automatic demand water system pump
  • Built-in pressure switch automatically starts and stops pump when faucet is opened and closed
  • Capable of supplying up to 5 fixtures!
  • Self-priming so pump can be located in a location higher than the water tank
  • Run-dry safe
  • Built-in thermal protection

 

STANDARD DIAPHRAGM PUMP CONFIGURATIONS

Model Switch GPM/LPM PSI/BAR Draw (A) Valves Diaphragm Ports Voltage Wire Connections
SFDP1-030-060-51 Demand 3.0/11.3 60/4.1 12.0 Max EPDM Santoprene 1/2″-14 MNPT 12V DC 2-Pin/Leads
SFDP2-030-060-51 Demand 3.0/11.3 60/4.1 6.0 Max EPDM Santoprene 1/2″-14 MNPT 24V DC 2-Pin/Leads
SFDP1-040-060-51 Demand 4.0/15.1 60/4.1 15.0 Max EPDM Santoprene 1/2″-14 MNPT 12V DC 2-Pin/Leads
SFDP2-040-060-51 Demand 4.0/15.1 60/4.1 7.0 Max EPDM Santoprene 1/2″-14 MNPT 24V DC 2-Pin/Leads
SFDP1-055-060-51 Demand 5.5/20.8 60/4.1 17.0 Max EPDM Santoprene 1/2″-14 MNPT 12V DC 2-Pin/Leads
SFDP2-055-060-51 Demand 5.5/20.8 60/4.1 9.0 Max EPDM Santoprene 1/2″-14 MNPT 24V DC 2-Pin/Leads

 

Additional information

Weight 8 lbs
Dimensions 12 × 9 × 6 in
Flow

3.0 GPM, 4.0 GPM, 5.0GPM

Voltage

12V DC, 24VDC

51 Series- General Information

51 Series- Instructions

 

1 review for 51-Series Diaphragm Water Pumps

  1. mpho

    It is the best pump ever…easy to install. The automatic demand feature is really the best.

    • joseph

      Hello,
      We are so glad that you enjoy your pump! Please let us know if we can ever help you with anything in the future. Have a great day!

      Thanks,
      Joe Cirillo

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