DAE MJ-75R Non Lead Hot Water Meter 3/4ft NPT Couplings - Reliable

In this review the DAE MJ-75R is judged as a practical, no-nonsense hot water meter for commercial and multiunit residential plumbing where accurate water accounting matters. The bottom line: this meter is for landlords, maintenance teams and installers who need a durable, factory-calibrated inline device with pulse output and simple remote-reading options. The review finds the MJ-75R stands out for its combination of straightforward installation, good accuracy in the normal flow range, and support for cloud metering when paired with DAE gateways.

Key Features

• Horizontal inline mount: Designed to install with the dial facing upwards so readings are easy to check during routine inspections.
• 3/4' NPT couplings: Standard threaded connections simplify plumbing swaps and ensure both inlet and outlet use 3/4' couplings for consistent pipe work.
• Pulse output: Provides a simple electronic pulse for integration with remote counters or AMR systems for automated data collection.
• Cloud metering ready: When paired with the DAE CC2030 Gateway and AMR modules the meter can deliver real time usage, alerts and billing reports to phones and PCs.
• Factory calibration available: Optional certificates let purchasers verify accuracy and satisfy project documentation requirements.
• Built to standards: Conforms to AWWA C700 and ISO 4064 Class C for city water metering, giving installers confidence in expected performance.

Who It's For

The MJ-75R is best suited for property managers, plumbing contractors and building engineers who need a reliable meter for hot water lines with a common 3/4' connection and want the option to add remote reading or cloud metering later. Its pulse output and compatibility with DAE AMR modules make it a good choice where periodic or continuous remote data is required.

Those who frequently install meters vertically should consider DAE's vertical model instead, and sites that require metering of non-city or contaminated fluids should look to meters specified for those conditions. This unit is intended for clean, city-supplied hot water applications per the listed standards.

Pros & Cons

Pros

• Accurate to +/-1.5% across normal flow ranges, which matches expectations for water billing and monitoring.
• Supports remote reading and cloud integration with DAE CC2030 and AMR options, enabling alerts and tenant billing reports.
• Factory calibration certificates are available for projects requiring traceable verification.
• Well built and good value according to customer feedback, performing reliably under higher GPM conditions.

Cons

• Intended only for horizontal inline mounting; a different model is required for vertical upward flow installations.
• CO-10 pulse counter, AMR130 or CC2030 gateway are sold separately for remote or cloud metering functionality.

Specifications

Meter type	Non lead hot water meter, horizontal inline
Connection	3/4' NPT couplings (inlet and outlet)
Accuracy	+/-1.5% within normal flow range
Flow range	Normal test limits 1-20 GPM; safe max 20 GPM; recommended continuous 10 GPM
Minimum test flow	0.25 GPM
Standards	AWWA C700, ISO 4064 Class C, conforms to AWWA C708 for clean water
Output options	Pulse output for CO-10 or AMR130/AMR modules; cloud ready with CC2030 gateway

Our Verdict

The DAE MJ-75R is a sensible choice for landlords and installers who need an accurate, durable 3/4' hot water meter that can be expanded with remote reading or cloud features. Its factory calibration option and standards compliance make it a good value for commercial and multifamily installations, provided the installation is horizontal and the site uses city-quality potable water.

Frequently Asked Questions

Can this meter be installed vertically?
The MJ-75R is designed for horizontal inline mounting with the dial up; for vertical upward flow use DAE's vertical model.

Does it support remote reading out of the box?
It has a pulse output for remote counters, but CO-10, AMR130 or AMR modules and the CC2030 gateway are purchased separately for remote or cloud metering.

Is a calibration certificate available?
Yes, factory calibration certificates can be supplied for projects that require traceable verification.