Mastercool MRBL Low Side Replacement Gauge – R134a, R22, R12, R404A – BAR/PSI/°C

Professional Replacement Gauge for HVAC & Refrigeration

When your manifold gauge needs replacing, reach for the Mastercool MRBL — a low-side replacement gauge engineered for accuracy, durability, and long-term performance in demanding HVAC and refrigeration environments. Trusted by technicians worldwide, Mastercool gauges are built to the same exacting standards as the original manifold set.

Anti-Flutter Technology

Engineered to reduce needle fluctuation and improve reading stability, Mastercool's Anti-Flutter Technology ensures clearer, more accurate pressure readings in dynamic environments — helping you diagnose faster and work with greater confidence.

Key Features

• Anti-Flutter Technology — reduces needle fluctuation for stable, accurate readings
• Black metal gauge housing — durable, modern appearance with excellent field visibility
• Blue low-side face — traditional colour coding for quick, intuitive system identification
• Triple scale display — BAR / PSI / °C for versatile use across applications
• 1.6 Gauge Class accuracy
• Compatible with R134a, R22, R12, and R404A refrigerant scales

Applications

• HVAC service and maintenance
• Refrigeration diagnostics
• Automotive A/C repair
• Commercial and residential cooling systems
• Manifold gauge set upgrades and replacements

Specifications

• Model: MRBL
• Side: Low Side
• Refrigerant scales: R134a, R22, R12, R404A
• Display units: BAR / PSI / °C
• Gauge class: 1.6
• Housing: Black metal