JB Industries
JB Industries QC-G851 Low Side Gauge Blue R-22 R-134A R-404A
Low-side pressure gauge for R-22, R-134A and R-404A systems, rated to 500 psi with ±1.00% accuracy
- ColorBlue
- Low-side gauge reads R-22, R-134A and R-404A systems
- ±1.00 % accuracy ensures reliable pressure readings
- 500 psi working pressure handles demanding HVAC jobs
- ¼ in connection fits standard service hoses
- Blue dial colour gives instant low-side identification
Low Side Gauge for R-22, R-134A, R-404A
The JB Industries QC-G851 is a low side pressure gauge designed for HVAC technicians performing quick pressure checks on large systems or refrigerant tanks. It supports R-22, R-134A and R-404A refrigerants. The gauge features a blue colour coding and a 1/4 inch connection size for standard manifold compatibility.
Sustained Load Behaviour Under Working Pressure
The gauge is rated for a working pressure of 500 psi and maintains an accuracy of +/- 1.00 percent across the operating range. This precision allows reliable readings during extended diagnostic sessions on large installations. The 3 1/8 inch dial diameter provides clear visibility of the needle position while monitoring system pressures over time.
Interface Practical Limits
The 1/4 inch connection size determines the compatible hose and manifold fittings for this gauge. Users must ensure their existing equipment matches this connection standard for proper sealing. The gauge is restricted from sale in certain states, so technicians should verify local regulations before purchasing for use in regulated jurisdictions.
Highlights
- Low-side gauge reads R-22, R-134A and R-404A systems
- ±1.00 % accuracy ensures reliable pressure readings
- 500 psi working pressure handles demanding HVAC jobs
- ¼ in connection fits standard service hoses
- Blue dial colour gives instant low-side identification
Specifications
| Brand | JB INDUSTRIES |
|---|---|
| Color | Blue |
Questions about this item
How much heat or power does the QC-G851 low side gauge generate during all-day use?
The gauge is a passive mechanical instrument with no power draw and produces no measurable heat during continuous operation.
What connection fitting must already be on the hose or manifold for the QC-G851 to thread on?
A 1/4 in connection is required to attach the gauge to a hose, manifold or refrigerant tank.
Will the QC-G851 read correctly on an older R-22 system that still uses the original service ports?
Yes, the gauge is calibrated for R-22, R-134A and R-404A with +/- 1.00 percent accuracy on existing 1/4 in service ports.
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