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51-Series Diaphragm Water Pumps

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51-Series Diaphragm Water Pumps

(1 customer review)

$123.49

51-Series Water Pressure Pump

Industry-Leading 4 Year Warranty!

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 5.0 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, eliminating the need for an accumulator tank. 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, 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
SFDP1-050-060-51 Demand 5.0/18.9 60/4.1 17.0 Max EPDM Santoprene 1/2″-14 MNPT 12V DC 2-Pin/Leads
SFDP2-050-060-51 Demand 5.0/18.9 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, 5.5 GPM

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.

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