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MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 142 - 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, 142

The MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back is a medium and high operating pressure differential gauge with switch from the Series 142. It features a diaphragm sensor, a 2 1/2 in dial, and a 1/4…

SKU 3G-OTH-174574

Also listed as: 142SA00OAA20P · 142 SA 00 O AA 20P · 142-SA-00-O-AA-20P

Brand
MIDWEST INSTRUMENT
Item
Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 142
Category
Medium & High Operating Pressure Differential Gauges with Switch
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MIDWEST INSTRUMENT
Manufacturer Part Number
142-SA-00-O(AA)-20P
Series
142
Type
142, 2 1/2 in Dial (MPN 142-SA-00-O(AA)-20P)
NPT Female
1/4 in
Sensor Type
Diaphragm
Gauge Accuracy
±3-2-3%
Housing Material
316 Stainless Steel
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 142. It features a diaphragm sensor, a 2 1/2 in dial, and a 1/4 in NPT female connection, with a 316 Stainless Steel housing and a gauge accuracy of ±3-2-3%. The SKU is 3G-OTH-174574, and the manufacturer part number is 142-SA-00-O(AA)-20P; a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 142-SA-00-O(AA)-20P differential pressure gauge and switch used for?

This instrument is used to measure and control differential pressure in medium and high operating pressure systems. Common applications include filtration monitoring, pump protection, and flow measurement in industrial processes where a diaphragm sensor and switch output are required.

What are the specifications of the MIDWEST INSTRUMENT 142-SA-00-O(AA)-20P?

The Series 142 gauge has a diaphragm sensor, 2 1/2 in dial, 1/4 in NPT female back connection, and 316 stainless steel housing. Gauge accuracy is ±3-2-3%. A certificate of calibration is not included. The manufacturer part number is 142-SA-00-O(AA)-20P.

Where to buy the MIDWEST INSTRUMENT 142-SA-00-O(AA)-20P worldwide?

3G Electric supplies the MIDWEST INSTRUMENT 142-SA-00-O(AA)-20P differential pressure gauge and switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the MIDWEST INSTRUMENT 142-SA-00-O(AA)-20P differential pressure gauge and switch?

Install the gauge with the 1/4 in NPT female connection into a compatible port, ensuring the diaphragm sensor is oriented correctly for the process media. Use appropriate sealant on threads and avoid over-torquing. Refer to the manufacturer's manual for wiring the switch output and pressure range settings.

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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