GA075-15 - Miller 4000 PSI Replacement Regulator Gauge, 1.5-Inch Back Mount

Precision High-Pressure Monitoring

The Miller GA075-15 Gauge is an essential component for the safe and efficient operation of industrial gas regulators. Designed to monitor cylinder contents, this high-pressure gauge provides accurate readings up to 4000 PSI (and equivalent Bar scale), making it suitable for a wide range of compressed gases including Oxygen, Argon, Helium, and Nitrogen mixes. Its primary function is to give operators a clear, immediate visual indication of the remaining gas supply in the cylinder, ensuring that processes are not interrupted unexpectedly by an empty tank.

Engineered for durability in demanding industrial environments, the gauge features a robust black steel case. This construction offers superior protection against the physical impacts, vibrations, and rough handling typical of welding shops, fabrication floors, and construction sites. Unlike plastic-cased alternatives, the steel housing ensures the internal mechanism remains protected, maintaining calibration and longevity over time. The 1.5-inch dial face is compact enough to fit within the protective gauge guards found on many Miller and Smith regulators, yet the high-contrast markings ensure it remains easily legible from a working distance.

Installation is straightforward with its standard center back mount configuration. This design allows the gauge to thread directly into the high-pressure port of compatible regulator bodies. Safety is paramount when dealing with high-pressure compressed gases; a functioning, accurate gauge is the first line of defense in identifying system pressure and potential leaks. By replacing damaged or illegible gauges with this genuine Miller component, facilities can maintain compliance with safety standards and ensure their equipment operates at peak performance.

Technical Reliability

The dual-scale face of the GA075-15 enhances its versatility, allowing it to be used in operations that standardize on either Imperial (PSI) or Metric (Bar) measurements. The internal bourdon tube mechanism is calibrated to withstand the sudden pressure rise often associated with opening cylinder valves, although standard safety practices (opening valves slowly) should always be followed. Whether used for MIG, TIG, or Oxy-Fuel applications, this gauge delivers the reliability professionals expect from Miller Electric products.