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, part of the Series 120. It features a piston sensor type, an aluminum housing…
SKU 3G-OTH-174593
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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, part of the Series 120. It features a piston sensor type, an 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-5P differential pressure gauge with switch used for?
This gauge with switch is used to measure and control differential pressure in medium to high operating pressure systems. Common applications include monitoring filter condition, pump performance, and flow in industrial hydraulic, pneumatic, and process lines where a local readout and switch output are needed.
What are the specifications of the MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch?
The Series 120 model 120AA-00-O-AA-5P uses a piston sensor, has an aluminum housing, a 2 1/2 in dial, and 1/4 in NPT female back connections. Gauge accuracy is ±3-2-3%. It does not include a certificate of calibration. The switch is integrated for alarm or control at a set differential pressure.
Where to buy the MIDWEST INSTRUMENT 120AA-00-O-AA-5P differential pressure gauge with switch worldwide?
3G Electric supplies the MIDWEST INSTRUMENT 120AA-00-O-AA-5P differential pressure gauge with switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.
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 to the high- and low-pressure ports. Ensure the piston sensor is oriented correctly per the flow direction arrow. Wire the switch contacts according to your control circuit voltage (e.g., 24 VDC or 120 VAC). Avoid overtightening to prevent housing damage.
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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.















