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Flojet D3131V1311A Duplex Diaphragm Bypass Pump - 50 PSI Switch, 1.5 GPM, 12 VDC

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5.00 lbs
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This is a two-diaphragm pump that withstands dry runs. Requires 12 VDC power connections. Handles pressure up to 50 PSI.
Prep 65

Prop 65


Technical Specifications

Max PSI: 50
Max GPM: 1.5
Voltage DC: 12
Inlet Port: 3/8 inch
Outlet Port: 3/8 inch

Product Description

Dry Run Pump

The Flojet D3131V1311A is a double diaphragm pump includes an integrated 12 VDC electric motor. Pump body is made from polypropylene for corrosion and chemical resistance. Self-primes up to 8 feet of vertical lift. Features the ability to run dry without damaging the critical components of the pump and features an internal bypass system protecting the pump from excessive pressures. Drive system utilizes heavy duty ball bearings.


  • Voltage: 12 VDC
  • GPM: 1.5
  • Max. Pressure: 50 PSI
  • No Switch
  • Ports: 3/8" FNPT
  • Material: Polypropylene
  • Diaphragm: Viton
  • Check Valve: Viton
  • Motor: Electric
  • Weight: 5.00 lbs.


  • Self-priming up to 8 feet (2.4 m)
  • Can run dry without damage 
  • Chemical resistant material
  • Internal bypass standard
  • Built-in back flow preventer
  • Heavy duty ball bearing drive system
  • UL, CSA and CE models available

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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