JB Industries
JB Industries M2-825 High Side Gauge Red 800 psi
High-side manifold gauge reads up to 800 psi for R-22, R-404A and R-410A systems
- ColorGlow-in-the-Dark, Red
- Glow-in-the-dark dial improves low-light visibility
- High-side gauge reads up to 800 psi working pressure
- +/-3-2-3% accuracy class supports precise refrigerant charging
- Compatible with R-22, R-404A and R-410A systems
- 1/8 in connection fits standard manifold gauge sets
High-Side Gauge for HVAC Manifolds
The JB Industries M2-825 is a high-side replacement gauge designed for manifold gauge sets used in air-conditioning and refrigeration service. It suits technicians who need a direct swap for a worn or damaged high-pressure instrument.
Glow-in-the-Dark Dial Improves Low-Light Reading
The gauge face uses a glow-in-the-dark red finish that remains visible in dim engine bays or crawl spaces without a flashlight. This feature helps technicians read pressure values during night calls or in poorly lit mechanical rooms.
Simple Thread-On Installation
The gauge installs by threading its 1/8 inch connection directly onto the manifold block, requiring only a wrench and thread sealant. The main risk is cross-threading the fitting or over-tightening, which can damage the manifold port or the gauge bourdon tube.
Highlights
- Glow-in-the-dark dial improves low-light visibility
- High-side gauge reads up to 800 psi working pressure
- +/-3-2-3% accuracy class supports precise refrigerant charging
- Compatible with R-22, R-404A and R-410A systems
- 1/8 in connection fits standard manifold gauge sets
Specifications
| Brand | Jb Industries |
|---|---|
| Color | Glow-in-the-Dark, Red |
Questions about this item
How often does the M2-825 high-side gauge need recalibration to stay within its ±3-2-3 % accuracy?
The gauge is built to hold its ±3-2-3 % accuracy class under normal HVAC service; no periodic recalibration is mandated by the manufacturer.
What is the first limit reached when the gauge is used continuously at high-side pressure?
The 800 psi working-pressure ceiling is the hard limit; sustained readings above that risk permanent damage to the bourdon tube.
Does the red glow-in-the-dark dial add heat or power draw during all-day use?
No — the luminescent dial is passive, requires no electricity and generates no measurable heat during extended operation.
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