Jb Industries m2-420 Compound Gauge R134a R-404A R-507

Product Description

The JB INDUSTRIES m2-420 is a 2.5-inch low-side compound gauge designed for use with R-134a, R-404A, and R-507 refrigerants. Color-coded blue for low-side identification, it features an all-steel case construction and surge dampening to maintain reading accuracy under fluctuating system pressures. This gauge is built to the same specification as the gauges found on JB Industries manifold sets. HVAC technicians use it as a standalone replacement or addition to an existing manifold setup during refrigeration system diagnosis and service.

This gauge is suited for residential and light commercial refrigeration and air conditioning service work involving R-134a, R-404A, or R-507 refrigerant systems. It is a practical replacement when a manifold gauge face is damaged or when a technician needs a spare low-side gauge on hand. The 2.5-inch face size is the standard format used across most two-valve and four-valve manifold sets in the field.

Key Features

• All-steel case construction for durability in field use
• Surge-dampened movement for stable, accurate readings
• Blue color coding for low-side compound identification
• Compatible with R-134a, R-404A, and R-507 refrigerants
• 2.5-inch face diameter matches standard manifold gauge sizing
• Built to the same specification as JB Industries manifold set gauges

Compatibility

Designed for use with R-134a, R-404A, and R-507 refrigerant systems. Matched to the gauge specification used in JB Industries manifold sets and suitable as a standard 2.5-inch compound gauge replacement on compatible manifolds.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with refrigerant handling and EPA Section 608 requirements. Recover or isolate refrigerant from the system before removing or replacing any gauge connection. Gauges are sensitive instruments and must not be exposed to pressures beyond the rated scale. Handle with care to avoid impact damage to the movement or case.

Technical Specifications

• Face Diameter: 2.5 inches
• Side: Low Side (Compound)
• Color: Blue
• Case Material: Steel
• Compatible Refrigerants: R-134a, R-404A, R-507

Standard Information

• Brand: JB INDUSTRIES
• Manufacturer Part Number: m2-420