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Flojet D3121B1211A Duplex Diaphragm Bypass Pump - 25 PSI Switch, 1.2 GPM, 12 VDC

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3.40 lbs
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This is a two-diaphragm pump that withstands dry runs. Requires 12 VDC power connections. Handles pressure up to 25 PSI.
Prep 65

Prop 65


Technical Specifications

Voltage DC: 12
Max PSI: 25
Max GPM: 1.2

Product Description

Electric Pump

The Flojet D3121B1211A is a double diaphragm pump includes an integrated 12 VDC electric motor. Pump body is made from polypropylene for corrosion and chemical resistance. Ability to self-prime and handles waterlike and viscous liquids. Designed with an internal bypass system protecting the pump from excessive pressures.


  • Voltage: 12 VDC 
  • GPM: 1.2 
  • Max. Pressure: 25 PSI 
  • Material: Polypropylene 
  • Diaphragm: Buna 
  • Check Valve: Buna 
  • Motor: Electric 
  • Weight: 4.00 lbs.

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm (For more information go to

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