Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140 - 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, 140

The MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back is a medium and high operating pressure differential gauge with switch from the Series 140. It features a 2 1/2 in dial, 1/4 in NPT female connection…

SKU 3G-OTH-174619

Also listed as: 140SA00OAA100P · 140 SA 00 O AA 100P · 140-SA-00-O-AA-100P

Brand
MIDWEST INSTRUMENT
Item
Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 140
Part Number
140-SA-00-O(AA)-100P
Category
Medium & High Operating Pressure Differential Gauges with Switch
Available to Order
Also known as:140-SA-00-O(AA)-100PMIDWEST INSTRUMENT
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MIDWEST INSTRUMENT
Manufacturer Part Number
140-SA-00-O(AA)-100P
Series
140
Type
140, 2 1/2 in Dial (MPN 140-SA-00-O(AA)-100P)
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

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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 140. It features a 2 1/2 in dial, 1/4 in NPT female connection, a diaphragm sensor type, and a 316 Stainless Steel housing. The gauge accuracy is ±3-2-3%, and a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 140-SA-00-O(AA)-100P differential pressure gauge used for?

This gauge with switch monitors and controls differential pressure in medium to high operating pressure systems. It is used in industrial filtration, pump monitoring, and HVAC applications where a diaphragm sensor and 316 Stainless Steel housing are required for durability.

What are the specifications of the MIDWEST INSTRUMENT Series 140 differential pressure gauge?

The Series 140 gauge has a 2 1/2 in dial, 1/4 in NPT female connection, diaphragm sensor, and 316 Stainless Steel housing. Accuracy is ±3-2-3%. It includes a switch for alarm or control. Certificate of calibration is not included.

Where to buy the MIDWEST INSTRUMENT 140-SA-00-O(AA)-100P differential pressure gauge worldwide?

3G Electric supplies the MIDWEST INSTRUMENT 140-SA-00-O(AA)-100P differential pressure gauge worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Series 140 gauge.

How to install a MIDWEST INSTRUMENT Series 140 differential pressure gauge with switch?

Mount the gauge using the 1/4 in NPT female back connection. Ensure impulse lines are clean and free of debris. Wire the switch per the manufacturer's diagram for your control system. Do not exceed the rated operating pressure of the diaphragm sensor.

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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from MIDWEST INSTRUMENT

View all MIDWEST INSTRUMENT parts
This medium and high operating pressure differential gauge with switch from the Series 120 features a 2 1/2 in dial and 1/4 in NPT female connection. The piston sensor and 316 stainless steel housing support use in filtration, flow measurement, and pump monitoring applications. Gauge accuracy is ±3-2-3%. Certificate of calibration not included
MIDWEST INSTRUMENT
This medium and high operating pressure differential gauge with switch from the Series 120 features a 2 1/2 in dial and 1/4 in NPT female connection. The piston sensor and 316 stainless steel housing support use in filtration, flow measurement, and pump monitoring applications. Gauge accuracy is ±3-2-3%. Certificate of calibration not included
This medium and high operating pressure differential gauge with switch from the Series 240 features a diaphragm sensor and 316 stainless steel housing. It provides local pressure indication and electrical switching for monitoring and control in industrial processes such as filtration, pump protection, and flow measurement. Accuracy is ±3-2-3% with 1/4 in NPT female connections and IP65 4X enclosure rating
MIDWEST INSTRUMENT
This medium and high operating pressure differential gauge with switch from the Series 240 features a diaphragm sensor and 316 stainless steel housing. It provides local pressure indication and electrical switching for monitoring and control in industrial processes such as filtration, pump protection, and flow measurement. Accuracy is ±3-2-3% with 1/4 in NPT female connections and IP65 4X enclosure rating
This differential pressure gauge with switch from the Series 220 uses a piston sensor and a 316 stainless steel housing. It has 1/4 in NPT female connections, an IP65 4X enclosure rating, and a gauge accuracy of ±3-2-3%. Typical applications include monitoring differential pressure in medium to high pressure systems for filtration, pump protection, and flow measurement
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 220 uses a piston sensor and a 316 stainless steel housing. It has 1/4 in NPT female connections, an IP65 4X enclosure rating, and a gauge accuracy of ±3-2-3%. Typical applications include monitoring differential pressure in medium to high pressure systems for filtration, pump protection, and flow measurement
Series 120 differential pressure gauge with switch, featuring a 2 1/2 in dial, 1/4 in NPT female back connections, and a piston sensor. Aluminum housing with ±3-2-3% accuracy. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems, such as filtration, pump protection, and flow monitoring
MIDWEST INSTRUMENT
Series 120 differential pressure gauge with switch, featuring a 2 1/2 in dial, 1/4 in NPT female back connections, and a piston sensor. Aluminum housing with ±3-2-3% accuracy. Suitable for monitoring and controlling differential pressure in medium to high operating pressure systems, such as filtration, pump protection, and flow monitoring
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
Medium and high operating pressure differential gauge with switch, featuring a piston sensor and 2 1/2 in dial. Housed in 316 stainless steel with a 1/4 in NPT female back connection. Gauge accuracy is ±3-2-3%. Certificate of calibration not included. Typical applications include industrial filtration, pump monitoring, and hydraulic systems
MIDWEST INSTRUMENT
Medium and high operating pressure differential gauge with switch, featuring a piston sensor and 2 1/2 in dial. Housed in 316 stainless steel with a 1/4 in NPT female back connection. Gauge accuracy is ±3-2-3%. Certificate of calibration not included. Typical applications include industrial filtration, pump monitoring, and hydraulic systems
This differential pressure gauge with switch from the Series 120 features a 2 1/2 in dial and a 1/4 in NPT female back connection. It uses a piston sensor and has an accuracy of ±3-2-3%. The aluminum housing makes it suitable for medium and high operating pressure applications in fluid systems, providing local indication and switch output for alarm or control
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 120 features a 2 1/2 in dial and a 1/4 in NPT female back connection. It uses a piston sensor and has an accuracy of ±3-2-3%. The aluminum housing makes it suitable for medium and high operating pressure applications in fluid systems, providing local indication and switch output for alarm or control
Series 240 differential pressure gauge with integrated switch for medium and high operating pressure applications. Features a diaphragm sensor, 316 stainless steel housing, 1/4 in NPT female connection, and gauge accuracy of ±3-2-3%. Rated IP65 4X for environmental protection. Suitable for monitoring differential pressure in filtration, flow, and pump systems
MIDWEST INSTRUMENT
Series 240 differential pressure gauge with integrated switch for medium and high operating pressure applications. Features a diaphragm sensor, 316 stainless steel housing, 1/4 in NPT female connection, and gauge accuracy of ±3-2-3%. Rated IP65 4X for environmental protection. Suitable for monitoring differential pressure in filtration, flow, and pump systems

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first