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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 4 1/2 in dial, 1/4 in NPT female connection…

SKU 3G-OTH-174601

Also listed as: 120AC00OAA5P · 120AC 00 O AA 5P

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
120AC-00-O-AA-5P
Series
120
Type
120
Dial
4 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 4 1/2 in dial, 1/4 in NPT female connection, a piston sensor type, aluminum housing, and a gauge accuracy of ±3-2-3%. The 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 120AC-00-O-AA-5P differential pressure gauge and switch used for?

This gauge and switch monitors and controls differential pressure in medium to high operating pressure systems. It is used in industrial filtration, pump monitoring, and HVAC applications to detect clogged filters or measure pressure drops across equipment.

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

The Series 120 model 120AC-00-O-AA-5P has a 4 1/2 in dial, 1/4 in NPT female connection, piston sensor, aluminum housing, and ±3-2-3% gauge accuracy. It does not include a certificate of calibration. The switch output is rated for 120 VAC.

Where to buy the MIDWEST INSTRUMENT 120AC-00-O-AA-5P differential pressure gauge worldwide?

3G Electric supplies the MIDWEST INSTRUMENT 120AC-00-O-AA-5P differential pressure gauge and switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install a MIDWEST INSTRUMENT piston-type differential pressure gauge with switch?

Mount the gauge using the 1/4 in NPT female back connection, ensuring the process lines are clean and free of debris. Wire the switch per the manufacturer's diagram for 120 VAC. Avoid over-torquing the aluminum housing. Calibrate per system requirements.

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

Cross-referenced by specification & description
This differential pressure gauge with switch from the Series 120 features a piston sensor and a 4 1/2 in dial with ±3-2-3% accuracy. The 1/4 in NPT female back connection and aluminum housing suit medium to high operating pressure applications such as filtration monitoring, pump protection, and flow measurement where both local indication and electrical switch output are required
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 features a piston sensor and a 4 1/2 in dial with ±3-2-3% accuracy. The 1/4 in NPT female back connection and aluminum housing suit medium to high operating pressure applications such as filtration monitoring, pump protection, and flow measurement where both local indication and electrical switch output are required
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-20P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-20P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-15P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-15P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-30P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-30P)
This differential pressure gauge with switch from the Series 120 is designed for medium and high operating pressure applications. It features a 4 1/2 in dial, 1/4 in NPT female back connection, and a piston sensor type. The aluminum housing provides structural integrity, and the gauge accuracy is ±3-2-3%. Certificate of calibration is not included
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 is designed for medium and high operating pressure applications. It features a 4 1/2 in dial, 1/4 in NPT female back connection, and a piston sensor type. The aluminum housing provides structural integrity, and the gauge accuracy is ±3-2-3%. Certificate of calibration is not included
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-50P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 4 1/2 in Dial (MPN 120AC-00-O-AA-50P)

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This Series 240 differential pressure gauge with switch features a diaphragm sensor and a 316 stainless steel housing. It has a 1/4 in NPT female connection, IP65 4X rating, and gauge accuracy of ±3-2-3%. Suitable for measuring and switching on differential pressure in medium to high operating pressure systems, commonly used in industrial filtration, pump monitoring, and process control
This differential pressure gauge with switch from the Series 220 is designed for medium to high operating pressure applications. It features a piston sensor type, 316 stainless steel housing, 1/4 in NPT female connections, and an IP65 4X rating. Gauge accuracy is ±3-2-3%. Certificate of calibration is not included
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This differential pressure gauge with switch from the Series 220 is designed for medium to high operating pressure applications. It features a piston sensor type, 316 stainless steel housing, 1/4 in NPT female connections, and an IP65 4X rating. Gauge accuracy is ±3-2-3%. Certificate of calibration is not included
This differential pressure gauge with switch from the Series 120 features a 4 1/2 in dial, 1/4 in NPT female connection, and a piston sensor. It has an accuracy of ±3-2-3% and a 316 stainless steel housing. Suitable for monitoring and switching differential pressure in medium to high operating pressure systems such as industrial filtration, pump monitoring, and hydraulic applications
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This differential pressure gauge with switch from the Series 120 features a 4 1/2 in dial, 1/4 in NPT female connection, and a piston sensor. It has an accuracy of ±3-2-3% and a 316 stainless steel housing. Suitable for monitoring and switching differential pressure in medium to high operating pressure systems such as industrial filtration, pump monitoring, and hydraulic applications
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This differential pressure gauge with switch from the Series 140 features a 2 1/2 in dial and a diaphragm sensor. It has a 1/4 in NPT female connection and an aluminum housing. Gauge accuracy is ±3-2-3%. Typical applications include monitoring filter condition, pump performance, and flow in HVAC and industrial process systems
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