EVERFLO

The EF2200 and EF7000 are different flow-rate tiers within the EVERFLO on-demand electric sprayer pump line. The EF2200 typically delivers a lower flow rate (around 2.2 gallons per minute) suitable for smaller sprayer systems or spot treatments, while the EF7000 provides a higher flow rate (approximately 7 gallons per minute) for larger tanks or higher-volume applications. Both models use a polypropylene housing and a demand pressure switch, but the EF7000 may have a larger motor and diaphragm assembly to handle increased output. Selection depends on the required flow rate and system pressure specifications.

Yes, EVERFLO on-demand electric sprayer pumps are diaphragm-type pumps designed to run dry without damage. The diaphragm and valve system can operate without fluid for short periods, which is useful during priming or if the supply tank runs empty. However, prolonged dry running may cause overheating or accelerated wear on seals and bearings. It is recommended to avoid extended dry operation and to ensure the pump is primed before continuous use.

The demand pressure switch in EVERFLO pumps automatically starts the pump when system pressure drops below a set threshold (e.g., when a sprayer trigger is opened) and stops the pump when pressure reaches the cut-off point (e.g., when the trigger is closed). This eliminates the need for a separate pressure regulator or bypass valve, reduces energy consumption, and minimizes wear by preventing continuous operation. The switch is factory-set and not user-adjustable on most models.

EVERFLO pumps with polypropylene housing are compatible with a wide range of water-based fluids, including herbicides, pesticides, fertilizers, and mild detergents. Polypropylene offers good chemical resistance to acids, bases, and solvents at moderate concentrations and temperatures (typically up to 140°F or 60°C). For aggressive chemicals such as strong acids, ketones, or chlorinated solvents, the Viton-sealed versions (models with "-QA" suffix) provide improved elastomer compatibility. Always consult the chemical compatibility chart in the datasheet for specific fluids.

Yes, several EVERFLO models, such as the EF2200-BOX, EF3000-BOX, EF5500-BOX, and EF7000-BOX, are designed for 12V DC operation, making them suitable for mobile applications like tractor-mounted sprayers, ATV sprayers, or truck-bed spray systems. They require a 12V battery or DC power source with adequate amperage (typically 10-20 amps depending on model). The pumps include a demand pressure switch and can be wired with a standard on/off switch or relay.

EVERFLO models with the "-QA" suffix (e.g., EF2200-QA-BOX) feature a quick-attach or quick-connect port design that allows faster installation and removal of hose fittings without tools. The standard models (without "-QA") use threaded ports that require wrench tightening. Both versions have the same pump performance and pressure switch functionality. The "-QA" option is preferred for applications requiring frequent disconnection or where tool-free maintenance is desired.