Everflo EF4000 Diaphragm Pump

12VDC Diaphragm Pump 4 GPM (15.1 LPM), Round-Up Ready.

Everflo EF4000.

Everflo EF4000.

  • Everflo 12 V Pump - 4 gpm
    CAD $113.12
  • Everflo Quick Attach 12V Diaphragm Pump - 4 gpm
    CAD $118.49


The Everflo EF4000 12 Volt Diaphragm Pump is ideal for use with Round-Up and features a polypropylene pump housing and valve plate, Viton valves and a Santoprene diaphragm. Lightweight and versatile, the Everflo Diaphragm pumps are used on agricultural sprayers, in fluid transfer applications and on spot sprayers for homeowners.

Two versions of the Everflo EF4000 are available to suit your spraying requirements:

  • Everflo EF4000 with 1/2" (13 mm) female NPT ports
  • Everflo EF4000-QA with 3/4" (19 mm) quick attach ports

These pumps features a flow demand switch that automatically turns the pump on and off as flow is required. This feature eliminates the need for a pressure regulator and has very efficient electrical draw as power is only used when the pump flow is in demand. Demand Pumps require a balanced flow. Too small of a nozzle, whether on your spray gun or on your spray boom, may restrict the flow resulting in your Demand Pump shutting off.

We recommend using the AA122-1/2-PP Poly Line Strainer (see Related Products) to help eliminate contaminates from running through your Demand Pump.


  • Max. Pressure: 60 PSI (4.1 BAR)
  • Max. Flow: 4.0 GPM (15.1 LPM)
  • Voltage: 12 VDC
  • Max. Amps: 13
  • Port Sizes (EF4000): 1/2" (13 mm) female NPT
  • Port Sizes (EF4000-QA): 3/4" (19 mm) quick attach
  • Max. Fluid Temperature: 140 degrees Fahrenheit (60 degrees Celsius)
  • Self Priming to 8' (2.4 m)
  • Poly pump housing and valve plate
  • Viton valves and Santoprene diaphragm
  • Honeywell Micro Switch
  • Round-Up Ready
  • Steel fasteners are zinc plated
  • Inline Fuse Protection
  • Dry Weight: 5.6 lbs. (2.5 kg)
  • Dimensions: 9" x 5.5" x 5" (23 cm x 14 cm x 13 cm)
  • CE Approved

For more information on these Everflo Pumps, please review the Related Information section for specification charts.

Pay In Installments

Add one or more qualifying products to your cart and your entire order becomes eligible for interest-free installment plans of up to 6 months. Learn More

Some qualifying products such as sprayers and equipment require a shipping quote. Shipping will also qualify for installments. Contact us at 1-800-461-1041 or email sales@mkrittenhouse.com. Quotes are provided within 1 hour during normal business hours eastern standard time.

Related Information

Customer Reviews

Write Your Own Review

You're reviewing: Everflo EF4000 Diaphragm Pump

  • 1 star 2 stars 3 stars 4 stars 5 stars

* Required Fields