GA145-03 - Smith 2-Inch High Pressure Regulator Gauge 6000 PSI

Professional Grade High-Pressure Monitoring

The Smith Equipment GA145-03 is a premium replacement pressure gauge designed for industrial gas regulators. Engineered to monitor high-pressure cylinder contents, this gauge offers a service range of 0-6000 PSIG, making it suitable for oxygen, inert gases, and other high-pressure applications. The unit features a standard 2-inch diameter dial, which is the industry norm for compact yet readable regulator instrumentation. The dial face is a high-visibility cupped steel design, ensuring that operators can quickly and accurately verify gas levels from a distance.

Robust Construction for Industrial Use

Durability is a critical factor in welding and industrial environments where equipment is often subjected to impact and rough handling. The GA145-03 is built with a painted steel case that provides substantial protection for the internal mechanism. Unlike cheaper alternatives that may use plastic housings, the steel case of this Smith gauge ensures structural integrity. The internal inlet nipple is machined from brass, offering excellent corrosion resistance and a secure, leak-free connection when installed into the regulator body. Furthermore, the lens is crafted from a one-piece polycarbonate crystal. This material is virtually shatterproof, eliminating the safety hazard of broken glass and protecting the dial face from dust, debris, and moisture. A protective lip on the crystal further prevents damage to the face.

Precision and Compatibility

Accuracy is paramount when dealing with high-pressure gas cylinders. The Smith GA145-03 utilizes a watch-type precision movement mechanism. This design ensures smooth needle operation and consistent accuracy throughout the pressure range, allowing for reliable monitoring of gas depletion. The gauge is U.L. Listed, certifying that it meets rigorous safety and performance standards required for professional use. In terms of compatibility, the gauge is equipped with a 1/4-inch MNPT (Male National Pipe Thread) connection. This is the standard size for the vast majority of gas pressure regulators on the market, meaning this single SKU can serve as a universal replacement for Smith Equipment regulators as well as those from other major manufacturers.

Installation and Maintenance

Replacing a damaged gauge is a straightforward maintenance task that extends the life of your regulator. The GA145-03 features a preferred design with a 1/4 turn crystal ring, which simplifies access if maintenance is ever required, although the sealed unit is designed for maintenance-free longevity. When installing, the brass threads should be sealed with an appropriate PTFE tape or paste approved for the specific gas service to ensure a leak-tight seal. Whether you are refurbishing an old regulator or replacing a smashed gauge on a busy job site, the Smith GA145-03 provides the reliability and quality expected from a leader in gas equipment.