Description
The Everflo EF5500 is a high-capacity 12V diaphragm pump designed for heavy-duty spraying applications. As the largest model in the Everflo line, it is engineered for users who need maximum volume—5.5 GPM—to power larger spray booms or high-volume spray wands.
Technical Specifications
| Feature | Specification |
| Flow Rate | 5.5 GPM (20.8 LPM) |
| Max Pressure | 60 PSI (4.1 bar) |
| Voltage | 12V DC |
| Max Amp Draw | 17.0 Amps |
| Ports | 1/2″ NPT (Female) |
| Self-Priming | Up to 10 Feet |
| Pumping System | 5-Chamber Diaphragm |
Key Features
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5-Chamber Design: Unlike smaller 2 or 3-chamber pumps, the EF5500 uses a 5-chamber displacement system. This results in a much smoother flow with significantly less pulsation and “thumping” in the lines.
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High-Flow Ports: To handle the 5.5 GPM volume, this pump features 1/2″ NPT ports. This larger diameter is critical to prevent inlet restriction and cavitation.
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Heavy-Duty Motor: The motor is equipped with an internal fan and a robust housing to manage the heat generated by the 17-Amp draw. It is designed for increased durability during long workdays.
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Chemical Compatibility: Features Viton valves and a Santoprene™ diaphragm, making it highly resistant to corrosive agricultural chemicals like Roundup (glyphosate), liquid fertilizers, and most “soft wash” bleach solutions.
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Honeywell Micro Switch™: The integrated demand switch automatically manages the pump operation based on discharge pressure, turning off at 60 PSI and restarting when flow resumes.
Ideal Applications
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Agricultural Boom Spraying: Capable of supporting multi-nozzle spray booms (typically up to 7 or 10 nozzles depending on orifice size) for field or pasture maintenance.
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Soft Washing: A popular choice for professional “soft wash” roof and siding cleaning due to its high flow rate and chemical-resistant internals.
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High-Volume Fluid Transfer: Efficient for moving large quantities of water or chemicals between tanks.
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Dust Suppression: Suitable for truck-mounted water systems used to control dust on construction sites or arenas.





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