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

MIDWEST INSTRUMENT Series 140 Differential Pressure Gauge - Medium & High Operating Pressure Differential Gauges
MIDWEST INSTRUMENTMedium & High Operating Pressure Differential Gauges

MIDWEST INSTRUMENT Series 140 Differential Pressure Gauge

The MIDWEST INSTRUMENT Differential Pressure Gauge: Back is a medium and high operating pressure differential gauge from the Series 140 line. It features a diaphragm sensor type, a gauge accuracy of ±3-2-3%, and a…

SKU 3G-OTH-175114

Also listed as: 140SA00OO50P · 140 SA 00 OO 50P

Brand
MIDWEST INSTRUMENT
Item
Series 140 Differential Pressure Gauge
Category
Medium & High Operating Pressure Differential Gauges
Available to Order
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-OO-50P
Series
140
Type
±3-2-3% Gauge Accuracy, 140
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: Back is a medium and high operating pressure differential gauge from the Series 140 line. It features a diaphragm sensor type, a gauge accuracy of ±3-2-3%, and a 316 Stainless Steel housing. The gauge has a 1/4 in NPT Female connection and is identified by manufacturer part number 140-SA-00-OO-50P.

Frequently Asked Questions

What is a MIDWEST INSTRUMENT differential pressure gauge used for?

This gauge measures the difference in pressure between two points in a system, commonly used in filtration, flow monitoring, and pump applications across industrial plants. Its diaphragm sensor handles medium to high operating pressures, making it suitable for process control in HVAC, chemical, and oil & gas environments.

What are the specifications of the MIDWEST INSTRUMENT 140-SA-00-OO-50P?

The Series 140 gauge has a diaphragm sensor, ±3-2-3% accuracy, and a 316 stainless steel housing. It features a 1/4 in NPT female back connection. The manufacturer part number is 140-SA-00-OO-50P. Certificate of calibration is not included.

Where to buy a MIDWEST INSTRUMENT 140 differential pressure gauge worldwide?

3G Electric supplies and delivers the MIDWEST INSTRUMENT Series 140 differential pressure gauge worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure the gauge reaches your facility, whether in North America, Europe, Asia, or the Middle East.

How to install a MIDWEST INSTRUMENT diaphragm differential pressure gauge?

Mount the gauge with the 1/4 in NPT female connection using compatible fittings and sealant. Ensure the high-pressure port connects to the higher pressure side and the low-pressure port to the lower side. Avoid overtightening to prevent damage to the 316 stainless steel housing. Refer to manufacturer guidelines for specific torque values.

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. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
This differential pressure gauge from the Series 140 uses a diaphragm sensor to measure pressure differences in fluid systems. It features a 316 stainless steel housing, ±3-2-3% gauge accuracy, and a 1/4 in NPT female back connection. Typical applications include filtration monitoring, pump performance checks, and HVAC systems where medium to high operating pressures are encountered
MIDWEST INSTRUMENT
This differential pressure gauge from the Series 140 uses a diaphragm sensor to measure pressure differences in fluid systems. It features a 316 stainless steel housing, ±3-2-3% gauge accuracy, and a 1/4 in NPT female back connection. Typical applications include filtration monitoring, pump performance checks, and HVAC systems where medium to high operating pressures are encountered
This differential pressure gauge from the Series 140 features a diaphragm sensor and ±3-2-3% gauge accuracy. The 316 stainless steel housing and 1/4 in NPT female back connection suit medium and high operating pressure applications such as filtration, flow monitoring, and pump control
MIDWEST INSTRUMENT
This differential pressure gauge from the Series 140 features a diaphragm sensor and ±3-2-3% gauge accuracy. The 316 stainless steel housing and 1/4 in NPT female back connection suit medium and high operating pressure applications such as filtration, flow monitoring, and pump control
The MIDWEST INSTRUMENT Series 140 differential pressure gauge features a diaphragm sensor and 316 stainless steel housing. It offers ±3-2-3% gauge accuracy and a 1/4 in NPT female connection. This gauge is used for measuring differential pressure in medium and high operating pressure applications such as filtration monitoring and flow measurement
MIDWEST INSTRUMENT
The MIDWEST INSTRUMENT Series 140 differential pressure gauge features a diaphragm sensor and 316 stainless steel housing. It offers ±3-2-3% gauge accuracy and a 1/4 in NPT female connection. This gauge is used for measuring differential pressure in medium and high operating pressure applications such as filtration monitoring and flow measurement
This differential pressure gauge from the Series 140 features a diaphragm sensor and ±3-2-3% gauge accuracy. The housing is constructed from 316 stainless steel, with a 1/4 in NPT female back connection. It is used to measure pressure differences in industrial fluid systems, such as monitoring filter condition or flow across an orifice
MIDWEST INSTRUMENT
This differential pressure gauge from the Series 140 features a diaphragm sensor and ±3-2-3% gauge accuracy. The housing is constructed from 316 stainless steel, with a 1/4 in NPT female back connection. It is used to measure pressure differences in industrial fluid systems, such as monitoring filter condition or flow across an orifice
The MIDWEST INSTRUMENT Series 140 differential pressure gauge uses a diaphragm sensor to measure pressure differences in medium and high operating pressure systems. It features a 316 stainless steel housing, ±3-2-3% gauge accuracy, and a 1/4 in NPT female connection. Typical applications include filtration monitoring, pump performance checks, and flow measurement in industrial processes
MIDWEST INSTRUMENT
The MIDWEST INSTRUMENT Series 140 differential pressure gauge uses a diaphragm sensor to measure pressure differences in medium and high operating pressure systems. It features a 316 stainless steel housing, ±3-2-3% gauge accuracy, and a 1/4 in NPT female connection. Typical applications include filtration monitoring, pump performance checks, and flow measurement in industrial processes
The MIDWEST INSTRUMENT Series 140 differential pressure gauge uses a diaphragm sensor to measure pressure differences in medium and high operating pressure systems. It features a 1/4 in NPT female back connection, an aluminum housing, and a gauge accuracy of ±3-2-3%. This gauge is commonly used for monitoring filters, pumps, and flow in industrial HVAC, oil and gas, and process piping applications
MIDWEST INSTRUMENT
The MIDWEST INSTRUMENT Series 140 differential pressure gauge uses a diaphragm sensor to measure pressure differences in medium and high operating pressure systems. It features a 1/4 in NPT female back connection, an aluminum housing, and a gauge accuracy of ±3-2-3%. This gauge is commonly used for monitoring filters, pumps, and flow in industrial HVAC, oil and gas, and process piping applications

More from MIDWEST INSTRUMENT

View all MIDWEST INSTRUMENT parts
MIDWEST INSTRUMENT Differential Pressure Gauge: Back, 1/4 in NPT Female, Model 142, 2 1/2 in Dial (MPN 142-SA-00-OO-25P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge: Back, 1/4 in NPT Female, Model 142, 2 1/2 in Dial (MPN 142-SA-00-OO-25P)
Piston-type differential pressure gauge for medium to high operating pressure systems. Features a 316L stainless steel housing, ±3-2-3% gauge accuracy, and 1/4 in NPT female back connections. Suitable for monitoring pressure differences in filtration, flow measurement, and pump monitoring applications
MIDWEST INSTRUMENT
Piston-type differential pressure gauge for medium to high operating pressure systems. Features a 316L stainless steel housing, ±3-2-3% gauge accuracy, and 1/4 in NPT female back connections. Suitable for monitoring pressure differences in filtration, flow measurement, and pump monitoring applications
This differential pressure gauge from the Model 142 series measures the difference in pressure between two points in a system. It features a 4 1/2 in dial, 1/4 in NPT Female back connection, diaphragm sensor, and aluminum housing. Designed for medium and high operating pressures, it is commonly used in industrial applications such as filtration monitoring, pump performance verification, and flow measurement. Certificate of calibration not included
MIDWEST INSTRUMENT
This differential pressure gauge from the Model 142 series measures the difference in pressure between two points in a system. It features a 4 1/2 in dial, 1/4 in NPT Female back connection, diaphragm sensor, and aluminum housing. Designed for medium and high operating pressures, it is commonly used in industrial applications such as filtration monitoring, pump performance verification, and flow measurement. Certificate of calibration not included
This differential pressure gauge from the Model 142 series features a 4 1/2 in dial and 1/4 in NPT female back connections. It uses a diaphragm sensor and is housed in 316 stainless steel. Typical applications include measuring pressure differences in industrial filtration, flow monitoring, and pump systems where medium to high operating pressures are encountered. Certificate of calibration is not included
MIDWEST INSTRUMENT
This differential pressure gauge from the Model 142 series features a 4 1/2 in dial and 1/4 in NPT female back connections. It uses a diaphragm sensor and is housed in 316 stainless steel. Typical applications include measuring pressure differences in industrial filtration, flow monitoring, and pump systems where medium to high operating pressures are encountered. Certificate of calibration is not included
This differential pressure gauge from the Series 140 uses a diaphragm sensor to measure pressure differences in medium and high operating pressure systems. The aluminum housing and ±3-2-3% gauge accuracy support use in HVAC, filtration, and process control applications. Connection is 1/4 in NPT Female back mount. Certificate of calibration not included
MIDWEST INSTRUMENT
This differential pressure gauge from the Series 140 uses a diaphragm sensor to measure pressure differences in medium and high operating pressure systems. The aluminum housing and ±3-2-3% gauge accuracy support use in HVAC, filtration, and process control applications. Connection is 1/4 in NPT Female back mount. Certificate of calibration not included
This differential pressure gauge from the Series 142 features a diaphragm sensor and aluminum housing, with ±3-2-3% gauge accuracy. It has a 1/4 in NPT Female back connection. Suitable for measuring pressure differences in medium and high operating pressure systems, such as in industrial filtration, pump monitoring, and HVAC applications. Certificate of calibration not included
MIDWEST INSTRUMENT
This differential pressure gauge from the Series 142 features a diaphragm sensor and aluminum housing, with ±3-2-3% gauge accuracy. It has a 1/4 in NPT Female back connection. Suitable for measuring pressure differences in medium and high operating pressure systems, such as in industrial filtration, pump monitoring, and HVAC applications. Certificate of calibration not included
This differential pressure gauge from the Model 142 series features a 4 1/2 in dial and a diaphragm sensor. It has a 316 stainless steel housing with a 1/4 in NPT female back connection. Suitable for measuring pressure differences in industrial fluid systems, such as monitoring filter condition or pump performance
MIDWEST INSTRUMENT
This differential pressure gauge from the Model 142 series features a 4 1/2 in dial and a diaphragm sensor. It has a 316 stainless steel housing with a 1/4 in NPT female back connection. Suitable for measuring pressure differences in industrial fluid systems, such as monitoring filter condition or pump performance
This differential pressure gauge from the Model 142 series features a 2 1/2 in dial and a diaphragm sensor. The housing is constructed from 316 stainless steel with a 1/4 in NPT female back connection. It is used to measure pressure differences in industrial fluid systems, such as monitoring filter condition or pump performance. Certificate of calibration not included
MIDWEST INSTRUMENT
This differential pressure gauge from the Model 142 series features a 2 1/2 in dial and a diaphragm sensor. The housing is constructed from 316 stainless steel with a 1/4 in NPT female back connection. It is used to measure pressure differences in industrial fluid systems, such as monitoring filter condition or pump performance. Certificate of calibration not included