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Backflow Test Gauges
American Backflow ® has a large inventory of certified backflow test gauge equipment, hoses, and test fittings. We have a wide selection of analog test gauges, and also provide backflow test gauge calibration services.
Mid-West Instruments
![American Backflow Test Equipment - Mid-West Instrument](https://static.wixstatic.com/media/ad68de_a9053bd8cd634628a0801c63e68221f6~mv2.png/v1/fill/w_164,h_40,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/midwest-instrument-logo.png)
![Model 845-3 ® 3-Valve Backflow Test Kit](https://static.wixstatic.com/media/ad68de_73e8accdac514a38a023db61ee1ee74c~mv2.png/v1/fill/w_60,h_64,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/ad68de_73e8accdac514a38a023db61ee1ee74c~mv2.png)
![Model 845-5-NP ® 5-Valve Backflow Test Kit Non-Potable Water Use](https://static.wixstatic.com/media/ad68de_bc546b6eca2f4df592d8f9024e3deaca~mv2.png/v1/fill/w_60,h_65,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/ad68de_bc546b6eca2f4df592d8f9024e3deaca~mv2.png)
![Mid-West Instrument Backflow Test Gauges](https://static.wixstatic.com/media/ad68de_2ae8b5a3601f4b2ab1a44657609e72e3~mv2.jpg/v1/fill/w_117,h_93,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/ad68de_2ae8b5a3601f4b2ab1a44657609e72e3~mv2.jpg)
![Mid-West Instrument Backflow Test Gauges](https://static.wixstatic.com/media/ad68de_c12f41571c3e4664aed7819b32570940~mv2.png/v1/fill/w_60,h_66,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/ad68de_c12f41571c3e4664aed7819b32570940~mv2.png)
![Mid-West Instrument Backflow Test Gauges](https://static.wixstatic.com/media/ad68de_33ea4999a0ec41e1b612ea6ea9a68259~mv2.jpg/v1/fill/w_98,h_108,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/ad68de_33ea4999a0ec41e1b612ea6ea9a68259~mv2.jpg)
![Model 835 5-Valve Backflow Test Kit](https://static.wixstatic.com/media/ad68de_c76f215147e24f6b93f65b5cf28ff5a5~mv2.png/v1/fill/w_60,h_37,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/ad68de_c76f215147e24f6b93f65b5cf28ff5a5~mv2.png)
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Mid-West® Instrument develops proprietary designs that are manufactured exclusively for Original Equipment Manufacturers. Mid-West® Instrument differential pressure gauge, switch, or transmitter can be customized to the customer’s exact specifications.
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DUKE Products
![DUKE Product EZ900 Backflow Tester](https://static.wixstatic.com/media/ad68de_a018b4ecabf44d6f90705eb474742f1f~mv2.jpg/v1/crop/x_300,y_108,w_1680,h_2045/fill/w_83,h_101,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/d1c_edited.jpg)
DUKE EZ-900
Computerized Differential Pressure Gauge
Automatic Computerized Calibration
Features:
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Includes: Carrying case & strap, Hoses, Brass fittings, Testing Instructions
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Backflow Test Gauge - Ver. D3.2
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Tests All Backflow Assemblies
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Three gauges in one tester with continuous display of high side and low side and differential pressures.
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0-250 psi. High side and low side in 1 psi increments. Differential pressures in tenths (0.0 psi).
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Function prompts shown in display.
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Automatic calibration (upon gauge activation).
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Accuracy ±.2 PSID.
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Null feature, differential pressures can be reset to zero and then restored to normal operation.
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Two SS transducers (pressure sensors).
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Proof Pressure: 500 psi
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Burst pressure: 1250 psi
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Operating Pressure: 0 to 250 psi
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Temperature: 35 - 250°F
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Two valve (vent) operation, high side and low side.
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Two keypad buttons: On and Hold/Null/Manual off
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Automatic off, after 10 minutes of no activity.
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Three replaceable D size rechargeable batteries (may use alkaline batteries).
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Low battery indicator (star appears top left in display).
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Water resistant design.
ABBITZ Measurement
![ABBITZ_Model_338C.jpg](https://static.wixstatic.com/media/ad68de_46e4830c892248098d8505b22a720ac8~mv2.jpg/v1/fill/w_65,h_15,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/ABBITZ_Model_338C.jpg)
![](https://static.wixstatic.com/media/ad68de_b50ca18377134fa5b24f34effd1408b2~mv2.png/v1/fill/w_83,h_29,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/image3012.png)
ABBITZ™ indicators are available in a broad selection of materials and dial sizes for a variety of safe working pressures and differential pressure ranges. They are widely used for the measurement of differential pressure, flow rate, and liquid level applications
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