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

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, a 2 1/2 in dial, and a…

SKU 3G-OTH-04466

Also listed as: 120SA00OAA15P · 120SA 00 O AA 15P

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
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
120SA-00-O-AA-15P
Series
120
Type
120
Dial
2 1/2 in
NPT Female
1/4 in
Sensor Type
Piston
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 120. It features a piston sensor type, a 2 1/2 in dial, and a 1/4 in NPT Female connection, with a housing made of 316 Stainless Steel. The gauge accuracy is ±3-2-3%, and a certificate of calibration is not included.

Frequently Asked Questions

What is the MIDWEST INSTRUMENT 120SA-00-O-AA-15P differential pressure gauge with switch used for?

This gauge with switch is used to measure and control differential pressure in medium to high operating pressure systems. Typical applications include filtration monitoring, pump protection, and flow measurement in industrial processes where a piston sensor and 316 stainless steel housing are required.

What are the specifications of the MIDWEST INSTRUMENT 120 series differential pressure gauge?

The 120 series uses a piston sensor with ±3-2-3% gauge accuracy. It has a 2 1/2 inch dial, 1/4 inch NPT female back connection, and a 316 stainless steel housing. The model 120SA-00-O-AA-15P does not include a certificate of calibration.

Where to buy the MIDWEST INSTRUMENT 120SA-00-O-AA-15P in Singapore?

3G Electric supplies the MIDWEST INSTRUMENT 120SA-00-O-AA-15P differential pressure gauge with switch to Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this piston-type gauge.

How to select a differential pressure gauge with switch for high-pressure systems?

Select a gauge with a piston sensor for high-pressure applications, as pistons handle higher static pressures than diaphragms. Verify the connection size, housing material compatibility with your media, and required accuracy. For the MIDWEST INSTRUMENT 120 series, the 316 stainless steel housing suits corrosive environments.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-00-O-AA-10P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-00-O-AA-10P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-00-O-AA-30P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-00-O-AA-30P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-00-O-AA-20P)
MIDWEST INSTRUMENT
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-00-O-AA-20P)
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
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-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 120SA-00-O-AA-25P)
MIDWEST INSTRUMENT Differential Pressure Gauge & Switch: Back, 1/4 in NPT Female, 120, 2 1/2 in Dial (MPN 120SA-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 120SA-00-O-AA-50P)

More from MIDWEST INSTRUMENT

View all MIDWEST INSTRUMENT parts
Medium and high operating pressure differential gauge with switch from the Series 220. Features a piston sensor type, 316 stainless steel housing, and gauge accuracy of ±3-2-3%. Connections are 1/4 in NPT female with an IP65 4X rating. Suitable for monitoring and controlling differential pressure in industrial filtration, pump protection, and flow monitoring systems
MIDWEST INSTRUMENT
Medium and high operating pressure differential gauge with switch from the Series 220. Features a piston sensor type, 316 stainless steel housing, and gauge accuracy of ±3-2-3%. Connections are 1/4 in NPT female with an IP65 4X rating. Suitable for monitoring and controlling differential pressure in industrial filtration, pump protection, and flow monitoring systems
Medium and high operating pressure differential gauge with switch from the Series 120. Features a 4 1/2 in dial, 1/4 in NPT female connection, piston sensor, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for monitoring and switching in filtration, pump, and hydraulic systems
MIDWEST INSTRUMENT
Medium and high operating pressure differential gauge with switch from the Series 120. Features a 4 1/2 in dial, 1/4 in NPT female connection, piston sensor, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for monitoring and switching in filtration, pump, and hydraulic systems
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
This differential pressure gauge with switch from the Series 142 features a diaphragm sensor and a 2 1/2 in dial. It has a 1/4 in NPT female back connection and a 316 stainless steel housing. Gauge accuracy is ±3-2-3%. Certificate of calibration is not included. Typical applications include monitoring filter condition, pump performance, and flow in industrial processes
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 142 features a diaphragm sensor and a 2 1/2 in dial. It has a 1/4 in NPT female back connection and a 316 stainless steel housing. Gauge accuracy is ±3-2-3%. Certificate of calibration is not included. Typical applications include monitoring filter condition, pump performance, and flow in industrial processes
This differential pressure gauge with switch from the Series 220 is designed for medium to high operating pressure systems. It features a piston sensor, 316 stainless steel housing, and 1/4 in NPT female connections. The gauge accuracy is ±3-2-3% and the enclosure is rated IP65 4X. Typical applications include monitoring differential pressure in filtration, pump systems, and flow measurement in industrial processes
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 220 is designed for medium to high operating pressure systems. It features a piston sensor, 316 stainless steel housing, and 1/4 in NPT female connections. The gauge accuracy is ±3-2-3% and the enclosure is rated IP65 4X. Typical applications include monitoring differential pressure in filtration, pump systems, and flow measurement in industrial processes
This medium and high operating pressure differential gauge integrates a switch for monitoring and control. It features a 2 1/2 in dial, 1/4 in NPT female connection, diaphragm sensor, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for industrial filtration, pump monitoring, and process control applications
MIDWEST INSTRUMENT
This medium and high operating pressure differential gauge integrates a switch for monitoring and control. It features a 2 1/2 in dial, 1/4 in NPT female connection, diaphragm sensor, and 316 stainless steel housing. Accuracy is ±3-2-3%. Suitable for industrial filtration, pump monitoring, and process control applications
This differential pressure gauge with switch from the Series 240 uses a diaphragm sensor and 316 stainless steel housing. It has a 1/4 in NPT female connection, ±3-2-3% accuracy, and an IP65 4X enclosure rating. Suitable for monitoring and controlling differential pressure in medium to high pressure systems such as filtration, pump monitoring, and flow measurement
MIDWEST INSTRUMENT
This differential pressure gauge with switch from the Series 240 uses a diaphragm sensor and 316 stainless steel housing. It has a 1/4 in NPT female connection, ±3-2-3% accuracy, and an IP65 4X enclosure rating. Suitable for monitoring and controlling differential pressure in medium to high pressure systems such as filtration, pump monitoring, and flow measurement
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
MIDWEST INSTRUMENT
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