Delavan PowerFlo 12V Bypass Diaphragm Pump 5936-111E

A 12V powered bypass pump with quick attach port system that achieves flow rates up to 3.6 gpm (13.6 lpm), ideal for low volume spraying and fluid transfer applications.

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Ideal for low volume applications that require flow rates up to 3.6 gpm (13.6 lpm), the Delavan 5936-111E PowerFlo Bypass Diaphragm Pump is a reliable sprayer pump that can be used for various agricultural spraying, lawn spraying, and fluid transfer applications.

Powered by a 12-Volt DC electric motor, this Delavan bypass pump delivers the power and performance required to tackle a range of low volume spraying applications. Its Viton seals, along with a Santoprene diaphragm, provide excellent chemical resistance when handling general agricultural fluids, including liquid fertilizers, herbicides, pesticides, insecticides, and other hard-to-handle fluids.

The quick attach port system featured on this Delavan bypass pump makes connecting and disconnecting hoses to your pump much easier and more convenient, with no tools required.

Bypass pumps are useful in applications where a wide range of flows and pressures are required and when frequent stopping and starting of the motor is required ; for example, a spray bar with multiple nozzles, each controlled independently. The pump continues to run regardless of pressure in the system. For the spray bar example, the flow rate is different when one nozzle is turned on as opposed to having two or more nozzles turned on. As nozzles are turned off, excess flow is bypassed within the pump. Bypass pumps are common in applications where automatic demand switches aren't required.

The TeeJet AA122 Series Poly Line Strainer (see Related Products) is recommended for your bypass pump to help eliminate contaminates from running through the pump. Also, the TeeJet 23120 Poly Regulator (see Related Products) is recommended for your bypass pump, as bypass pumps require the use of a pressure regulator.

Note: Delavan 5836-111E and 5936-111E are practically the same exact pumps, with the only difference being the inlet and outlet.


  • Max. Flow: 3.6 gpm (13.6 lpm)
  • Max. Pressure: 60 psi (4.1 bar)
  • Max. Suction Lift: 14' (4.25 m)
  • Max. Draw: 10.5 Amps
  • Max. Fluid Temperature: 140° F (60° C)
  • Ports: 3/4" (19 mm) Quick Attach inlet and outlet
  • 12V motor powered
  • 5 chamber positive displacement bypass diaphragm pump
  • Polypropylene housing
  • Viton valves
  • Santoprene diaphragm
  • Stainless steel fasteners
  • Self-priming
  • Can be run dry
  • CE approved
  • Weight: 8 lb (3.6 kg)

Motor Specifications:

  • 12V DC permanent magnet, totally enclosed, non-ventilated motor
  • Leads: 14 AWG, 6" (15 cm) length
  • Coated steel motor shell

Please refer to the files under 'Related Information' for the manual, performance chart, and other useful information regarding the Delavan 5936-111E PowerFlo Bypass Diaphragm Pump.

Related Information

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