MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120
The MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back is a medium and high operating pressure differential gauge with switch from the Series 120. It features a piston sensor type, a 2 1/2 in dial, and a…
SKU 3G-OTH-174596
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Product Description
The MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back is a medium and high operating pressure differential gauge with switch from the Series 120. It features a piston sensor type, a 2 1/2 in dial, and a 1/4 in NPT female connection, with an aluminum housing and a gauge accuracy of ±3-2-3%. The manufacturer part number is 120AA-00-O-AA-25P, and a certificate of calibration is not included.
Frequently Asked Questions
What is the MIDWEST INSTRUMENT 120AA-00-O-AA-25P differential pressure gauge and switch used for?
This MIDWEST INSTRUMENT Series 120 gauge with switch monitors and controls differential pressure in medium to high operating pressure systems. It is commonly used in filtration, pump, and HVAC applications where a piston sensor provides reliable switching at a set point.
What are the specifications of the MIDWEST INSTRUMENT 120AA-00-O-AA-25P?
The gauge has a 2 1/2 in dial, 1/4 in NPT female back connection, aluminum housing, and piston sensor. Accuracy is ±3-2-3%. It is part of Series 120 and does not include a certificate of calibration. The manufacturer part number is 120AA-00-O-AA-25P.
Where to buy the MIDWEST INSTRUMENT 120AA-00-O-AA-25P worldwide?
3G Electric supplies the MIDWEST INSTRUMENT 120AA-00-O-AA-25P differential pressure gauge and switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Series 120 piston-type gauge.
How to install a MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch?
Mount the gauge using the 1/4 in NPT female back connection, ensuring the piston sensor is oriented per manufacturer guidelines. Connect impulse lines to the high- and low-pressure ports. Wire the switch contacts according to your control circuit. Always depressurize the system before installation.
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3G Electric supplies MIDWEST INSTRUMENT medium & high operating pressure differential gauges with switch. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















