21938 - ESAB 2-Inch High Pressure Regulator Gauge 4000 PSI ABS Case

Precision High-Pressure Monitoring

The ESAB 21938 is a robust 2.00-inch pressure gauge designed specifically for the high-pressure side of industrial gas regulators. Engineered to provide accurate readings up to 4000 PSI, this component is essential for monitoring cylinder contents safely and effectively. The gauge features a clean white face with distinct, high-contrast markings, ensuring that operators can quickly assess gas levels even in dimly lit workshop environments. Accurate pressure monitoring is critical for maintaining weld quality and ensuring that gas supplies are managed efficiently during long fabrication shifts.

Durable Construction

Unlike standard steel-cased gauges that may rust or dent, this unit is housed in a high-quality ABS plastic case. ABS (Acrylonitrile Butadiene Styrene) is known for its toughness and impact resistance, making it an ideal material for the rough conditions often found in welding shops and industrial sites. The plastic housing provides a lightweight yet rigid protective shell for the internal brass mechanism, shielding it from accidental knocks and environmental corrosion. This ensures a longer service life and consistent performance over time.

Technical Specifications and Application

This gauge is calibrated for a range of 0 to 4000 PSI, making it suitable for reading the internal pressure of full gas cylinders, including Oxygen, Argon, Nitrogen, and Helium mixtures. The 2-inch dial size is the industry standard for most medium-to-heavy-duty regulators, offering a balance between compactness and readability. While the specific thread pitch is standard (typically 1/4" NPT for this size class), the bottom-mount configuration allows for easy installation into existing regulator bodies. It serves as a direct replacement for damaged or illegible gauges on ESAB equipment and is compatible with many other regulator brands requiring similar specifications.

Safety and Reliability

Pressure gauges are critical safety devices in oxy-fuel and arc welding setups. A malfunctioning or broken gauge can lead to gas leaks or the inability to detect a depleting cylinder, potentially ruining a weld or creating a safety hazard. The ESAB 21938 is built to meet stringent industry standards for safety and accuracy. The clear lens protects the needle and face from dust, sparks, and oily residues, maintaining visibility. Whether you are refurbishing an old regulator or replacing a smashed gauge, this ESAB component restores the functionality and safety of your gas delivery system.