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American Backflow ® - DUKE EZ900

Computerized Differential Pressure Gauge

Automatic Computerized Calibration

DUKE EZ900 Computerized Differential Pressure Gauge

CALL (800) 662-5356



  • Includes: Carrying case & strap, Hoses, Brass fittings, Testing Instructions

  • Backflow Test Gauge - Ver. D3.2

  • Tests All Backflow Assemblies

  • 3 gauges in 1 tester with continuous display of high side and low side & differential pressures.

  • 0-250 psi. High side and low side in 1 psi increments. Differential pressures in tenths (0.0 psi).

  • Function prompts shown in display.

  • Automatic calibration (upon gauge activation).

  • Accuracy ±.2 PSID.

  • Null feature, differential pressures can be reset to zero and then restored to normal operation.

  • Two SS transducers (pressure sensors).

  • Proof Pressure: 500 psi

  • Burst pressure: 1250 psi

  • Operating Pressure: 0 to 250 psi 

  • Temperature: 35 - 250°F

  • Two valve (vent) operation, high side and low side.

  • Two keypad buttons: On and Hold/Null/Manual off

  • Automatic off, after 10 minutes of no activity.

  • Three replaceable d size rechargeable batteries (may use alkaline batteries).

  • Low battery indicator (star appears top left in display).

  • Water resistant design.

Duke Differential Pressure Tester - VIEW PDF:

Duke EZ 900 & 226 Test Procedures - VIEW PDF:

We provide exclusive service for the DUKE EZ 900 Backflow Test Gauge


Same day shipping on all in-stock items for orders placed before 12 noon PST

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