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, aluminum housing, and a…
SKU 3G-OTH-174625
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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, aluminum housing, and a 2 1/2 in dial with 1/4 in NPT female connections. The gauge accuracy is ±3-2-3%, and a certificate of calibration is not included.
Frequently Asked Questions
What is the MIDWEST INSTRUMENT 120AA-00-O-AA-50P differential pressure gauge and switch used for?
This Series 120 gauge with switch monitors and controls differential pressure in medium to high operating pressure systems. It is used in filtration, pump protection, and flow monitoring across industrial processes where a piston sensor and aluminum housing provide reliable performance.
What are the specifications of the MIDWEST INSTRUMENT 120AA-00-O-AA-50P?
The gauge has a 2 1/2 in dial, 1/4 in NPT female back connections, piston sensor type, aluminum housing, and ±3-2-3% accuracy. It is part of the Series 120 and does not include a certificate of calibration. The manufacturer part number is 120AA-00-O-AA-50P.
Where to buy the MIDWEST INSTRUMENT 120AA-00-O-AA-50P worldwide?
3G Electric supplies the MIDWEST INSTRUMENT 120AA-00-O-AA-50P differential pressure gauge and switch to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive the correct Series 120 unit for your application.
How to install the MIDWEST INSTRUMENT 120AA-00-O-AA-50P differential pressure gauge and switch?
Mount the gauge using the 1/4 in NPT female back connection, ensuring proper sealing with thread tape. Connect impulse lines to the high- and low-pressure ports, and verify the piston sensor moves freely. Follow standard piping practices for differential pressure instruments.
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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.















