JB Industries
JB Industries M2-890 Low Side Gauge 3-1/8 in Blue 500 psi
Low-side HVAC gauge with 3-1/8 in blue dial, 30 in Hg to 500 psi range and ±1.00% accuracy for R-22, R-404A and R-410A systems
- ColorBlue
- Accurate readings with +/- 1.00% precision
- Compatible with R-22, R-404A and R-410A refrigerants
- Reads vacuum to 30 in Hg and pressure to 500 psi
- 3-1/8 inch dial for clear visibility
- Blue color coding identifies low-side gauge
Low-Side Manifold Gauge for HVAC Systems
This 3-1/8 inch blue gauge reads low-side pressure from 30 in Hg to 500 psi with a +/- 1.00 percent accuracy. It connects via a 1/8 inch port and is built for use with R-22, R-404A and R-410A refrigerants. Technicians use it as a direct replacement on existing manifold sets.
Refrigerant Compatibility Determines Fit
The gauge is calibrated specifically for R-22, R-404A and R-410A. If the system uses a different refrigerant the pressure-temperature scale will not match and readings will be incorrect. Verify the refrigerant type before ordering.
Simple Thread-On Installation
The 1/8 inch connection threads onto standard manifold ports using common hand tools. Apply refrigerant-grade thread sealant to prevent leaks at the fitting. The most common error is cross-threading the brass connection or over-tightening, which damages the port.
Highlights
- Accurate readings with +/- 1.00% precision
- Compatible with R-22, R-404A and R-410A refrigerants
- Reads vacuum to 30 in Hg and pressure to 500 psi
- 3-1/8 inch dial for clear visibility
- Blue color coding identifies low-side gauge
Specifications
| Brand | JB INDUSTRIES |
|---|---|
| Color | Blue |
Questions about this item
What does the 500 psi working pressure mean when the gauge is installed on a manifold?
It shows the maximum refrigerant pressure the low-side gauge can read during normal service on systems using R-22, R-404A or R-410A.
How does the 1/8 in connection size limit what hoses or fittings can be used?
Only hoses and manifold blocks with a matching 1/8 in port will thread directly onto the gauge without adapters.
Will the 3-1/8 in diameter case fit the opening on my existing manifold body?
The gauge is built as a direct replacement for manifold gauge sets that take a 3-1/8 in diameter low-side instrument.
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