Just Better M2-875 Pressure Gauge

The JB Industries M2-875 High Side Pressure Gauge is a heavy-duty, 3-1/8 inch replacement manifold gauge engineered for high-pressure diagnostics on refrigeration systems. Featuring a vibrant red casing for immediate high-side identification, this analog gauge provides a 0 to 500 psi working range. Designed with a 1/8 inch MPT brass fitting, it is specifically calibrated for HVAC manifold gauge sets managing R-12, R-22, and R-502 refrigerants. The internal breathing diaphragm is a critical technical feature that eliminates air bubbles for steady, accurate needle movement, while the temperature-compensated design ensures precision regardless of ambient fluctuations. Housed in a high-tensile Zytel casing, this high side gauge resists impact and corrosion in demanding field environments. This non-illuminated, Class 1 instrument offers 1% accuracy across the entire dial, making it a reliable standard for technicians requiring a durable refrigeration pressure gauge for legacy system service and maintenance.

• Precise Scale Calibration: Rated for 0 to 500 psi with 1% accuracy, providing the reliable data required for critical system charging and diagnostics.
• Legacy Refrigerant Compatibility: Dedicated scales for R-12, R-22, and R-502, optimized for older HVAC system troubleshooting and maintenance.
• Enhanced Durability: The impact-resistant Zytel housing and internal seal prevent freezing and corrosive buildup within the analog pressure gauge.
• Steady Readings: Equipped with a unique breathing diaphragm that prevents air pocket formation and needle flutter during high-pressure operation.

Is this gauge compatible with R-410A systems?
No, the M2-875 is specifically calibrated for R-12, R-22, and R-502. Using it with higher-pressure refrigerants like R-410A may exceed the 500 psi limit and damage the internal calibration.

Does this unit come with a protective gauge boot?
The standard M2-875 does not include a boot. For additional protection against job site drops, a separate 3-1/8 inch gauge boot should be added.

What type of connection does this gauge use?
It features a standard 1/8 inch MPT (Male Pipe Thread) brass fitting, allowing it to screw directly into most standard HVAC manifold sets.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.