Seaflo 51 Series 5-Chamber DC Diaphragm Pump 18.9LPM 24V

The heavy duty pump

The Seaflo 51 Series DC Diaphragm Pump is
Seaflo’s heavy-duty water pump. It provides high volume water flow
with reduced pump cycling, thanks to the five-chamber diaphragm.
This model is designed to run on water systems with no accumulator
tank necessary, and up to five fixtures! It’s 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 Seaflo 51 Series DC Diaphragm Pump is self-priming and can run dry without damage,
performance reliable and low current. This automatic demand water
system pump has a built-in pressure switch, which automatically
starts and stops the pump when the faucet is opened and closed. Plus, it’s easy to install, service and winterise.

How a Diaphragm Pump Works

In front of the motor is a valve assembly containing two to five
valve pump chambers. Each valve chamber has a diaphragm behind it
in the lower pump housing. As the motor shaft turns, an internal
cam positioned behind the diaphragms causes the diaphragms to be
pushed forward, then back in a continuous sequence creating
suction. As this suction builds, fluid is pulled through the inlet,
through the various valve chamber check valves to the outlet.

Seaflo 51 Series DC Diaphragm Pump
Features:

• Five-chamber diaphragm provides high volume water flow with
  reduced pump cycling
• Threaded connections with multiple fittings allow connection to
  any outlet
• Motor sounds no louder than your room fan running
• Precise pressure control and stable performance and low starting pressure prevent burning the pump from frequent restarting
• Semi-rigid rubber feet for noise reduction from
  vibration
• Applications: Marine, RV, Agricultural, General Industrial,
  Filtration, Beverage Processing, Solar Water System
• Can supply up to 4 fixtures
• Good sealing performance,waterproof and dustproof
• Good heat dissipation
• Run dry safe
• 2-year warranty

Seaflo 51 Series DC Diaphragm Pump
Specifications:

General

• Housing Material: Nylon/Polypropylene
• Valves/Seals Material: EPDM/VITION
• Diaphragm Material: Santropene
• Wire Connections: 2-Pin/Leads
• Motor: Runs dry without damage
• Dimensions: 216 x 146 x 131mm

Pump

• Type: 5 Chamber positive displacement diaphragm pump, self
  priming, capable of being run dry
• Control Type: Pressure switch
• Max Recommended Temperature: 60° C（140° F）
• Priming Capabilities: 6 feet (1.8 m) suction lift
• Re-start Pressure: Shut-on Pressure 20 PSI ：20 PSI ±3 PSI; Shut-off Pressure 60 PSI ：60 PSI ±3 PSI
• Inlet/Outlet Ports: 1/2in-14 MNPT
• Weight: 6.1 lbs (2.8 kg)

Motor

• Leads: 14 AWG, 13in (33cm) long with 2-Pin
  connector/Leads
• Duty Cycle: Continuous
• Max.Amp Draw: 17.0 A
• Fuse: 25.5 A

Standard Pump Configuration

• Model: SFDP2-050-060-51
• Voltage: 24V
• Open flow（GPM/LPM): 5.0 / 18.9
• Control type: Switch
• Max draw: 8.0A

Seaflo 51 Series DC Diaphragm Pump Product Manual