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MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120 - Medium & High Operating Pressure Differential Gauges with Switch
MIDWEST INSTRUMENTMedium & High Operating Pressure Differential Gauges with Switch

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-174595

Also listed as: 120AA00OAA20P · 120AA 00 O AA 20P

Brand
MIDWEST INSTRUMENT
Item
Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120
Category
Medium & High Operating Pressure Differential Gauges with Switch
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

MIDWEST INSTRUMENT
Manufacturer Part Number
120AA-00-O-AA-20P
Series
120
Type
120
Dial
2 1/2 in
NPT Female
1/4 in
Sensor Type
Piston
Gauge Accuracy
±3-2-3%
Housing Material
Aluminum
Certificate of Calibration
Not Included

Technical Documents

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MIDWEST INSTRUMENT Products
3G Electric (S) Pte. Ltd. — Singapore

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 120AA-00-O-AA-20P differential pressure gauge with switch used for?

This gauge with switch monitors and controls differential pressure in medium to high operating pressure systems. It is used in filtration, pump monitoring, and process control applications where a piston sensor provides reliable switching at a setpoint.

What are the specifications of the MIDWEST INSTRUMENT Series 120 differential pressure gauge with switch?

The Series 120 model 120AA-00-O-AA-20P has a 2 1/2 in dial, 1/4 in NPT Female back connection, piston sensor, aluminum housing, and ±3-2-3% gauge accuracy. It does not include a certificate of calibration.

Where to buy the MIDWEST INSTRUMENT 120AA-00-O-AA-20P differential pressure gauge with switch worldwide?

3G Electric supplies the MIDWEST INSTRUMENT 120AA-00-O-AA-20P differential pressure gauge with switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site, ensuring a smooth procurement process.

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 with appropriate thread sealant. Connect impulse lines to the high- and low-pressure ports. Wire the switch contacts per the wiring diagram, ensuring the setpoint is adjusted for your application.

Used in

Common applications for MIDWEST INSTRUMENT
Filter monitoring in industrial water treatment — MIDWEST INSTRUMENT 522 series 3-color differential pressure indicators
Flow measurement in chemical processing — MIDWEST INSTRUMENT Series 120 piston-type differential pressure gauges
Liquid level indication in oil and gas storage tanks — MIDWEST INSTRUMENT Model 142 diaphragm-type differential pressure gauges
HVAC system filter condition monitoring — MIDWEST INSTRUMENT Series 130 differential pressure gauges with glass-reinforced plastic housing
Pump differential pressure monitoring in industrial plants — MIDWEST INSTRUMENT 522 series indicators with switch for alarm output

MIDWEST INSTRUMENT Products

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.

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Compatible alternatives & equivalents

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This differential pressure gauge with integrated switch is designed for medium to high operating pressure systems. It features a 2 1/2 in dial, 1/4 in NPT female back connections, and a piston sensor. The aluminum housing and ±3-2-3% accuracy support applications such as industrial filtration, pump monitoring, and HVAC control
MIDWEST INSTRUMENT
This differential pressure gauge with integrated switch is designed for medium to high operating pressure systems. It features a 2 1/2 in dial, 1/4 in NPT female back connections, and a piston sensor. The aluminum housing and ±3-2-3% accuracy support applications such as industrial filtration, pump monitoring, and HVAC control
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-25P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-25P)
This differential pressure gauge with switch from the Series 120 features a 2-1/2 in dial, 1/4 in NPT female back connection, and a piston sensor. The aluminum housing provides structural support, and the gauge accuracy is ±3-2-3%. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems such as industrial filtration and pump monitoring
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 features a 2-1/2 in dial, 1/4 in NPT female back connection, and a piston sensor. The aluminum housing provides structural support, and the gauge accuracy is ±3-2-3%. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems such as industrial filtration and pump monitoring
This differential pressure gauge with switch features a piston sensor and aluminum housing. It has a 2 1/2 in dial with 1/4 in NPT female back connections and an accuracy of ±3-2-3%. Suitable for monitoring filter condition, pump performance, and flow in hydraulic, pneumatic, and process lines
MIDWEST INSTRUMENT
This differential pressure gauge with switch features a piston sensor and aluminum housing. It has a 2 1/2 in dial with 1/4 in NPT female back connections and an accuracy of ±3-2-3%. Suitable for monitoring filter condition, pump performance, and flow in hydraulic, pneumatic, and process lines
This differential pressure gauge with switch from the Series 120 is designed for medium to high operating pressure systems. It features a piston sensor, aluminum housing, and a 2 1/2 in dial with 1/4 in NPT female back connections. Gauge accuracy is ±3-2-3% of span. Certificate of calibration not included. Typical applications include industrial filtration, pump monitoring, and HVAC systems
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 is designed for medium to high operating pressure systems. It features a piston sensor, aluminum housing, and a 2 1/2 in dial with 1/4 in NPT female back connections. Gauge accuracy is ±3-2-3% of span. Certificate of calibration not included. Typical applications include industrial filtration, pump monitoring, and HVAC systems
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-50P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120AA-00-O-AA-50P)

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