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21939 - 2-Inch Replacement Regulator Gauge - 600 PSI LBM

Packaging: pack of 1
$27.71/EA

Usually ships within 3-5 business days

SKU: ESB21939 Categories: ,

OVERVIEW

Precision Monitoring for Industrial Gas Systems

The ESAB 21939 is a high-quality replacement pressure gauge designed to restore functionality to industrial gas regulators. Accurate pressure monitoring is critical for both safety and process quality in welding and cutting applications. This gauge features a calibrated scale ranging from 0 to 600 PSI, making it suitable for a variety of medium-pressure delivery applications, such as heavy-duty oxygen delivery, nitrogen purging, or other inert gas systems requiring delivery pressures exceeding standard low-pressure ranges.

Constructed with a robust ABS (Acrylonitrile Butadiene Styrene) plastic case, this unit is engineered to withstand the rigors of industrial environments. ABS offers superior resistance to impact and chemical corrosion compared to standard steel cases, ensuring the internal mechanism remains protected against accidental knocks and shop floor debris. The 2.00-inch dial diameter is the industry standard for regulator gauges, ensuring compatibility with a wide array of equipment from ESAB, Victor, and other major manufacturers.

The gauge utilizes a Lower Back Mount (LBM) connection, the standard configuration for face-forward regulator designs. The dial face is finished in a high-contrast white with distinct black markings, facilitating quick and accurate readings from a distance. This clarity helps operators maintain precise control over gas flow, directly influencing weld quality and operational safety. Whether used for maintenance, repair, or operations (MRO), this component meets the stringent reliability standards expected of ESAB equipment.

Key Technical Specifications:

  • Pressure Range: 0-600 PSI (Pounds per Square Inch)
  • Dial Size: 2.00 Inches nominal diameter
  • Housing Material: Impact-resistant ABS Plastic
  • Mounting Style: Lower Back Mount (LBM)
  • Readability: High-contrast white background

Integrating this gauge into your inventory ensures you have the necessary spares to minimize downtime caused by damaged instrumentation. It is an essential component for any gas apparatus repair kit.

Additional Information
packaging-description:pack of 1
----- new values below ----
Case Material:ABS Plastic
Face Color:White
Application:Gas Regulator Replacement
Brand:ESAB
Pressure Range:0-600 PSI
Dial Diameter:2.00 in
Mount Type:Lower Back Mount (LBM)

INCLUDED

  • 1x 2.00" Pressure Gauge (0-600 PSI)

APPLICATIONS

  • Replacement of broken delivery gauges on industrial regulators
  • Nitrogen purging equipment monitoring
  • High-pressure delivery oxygen systems
  • General MRO gas apparatus repair
  • Custom gas manifold assemblies

FAQ

Most standard 2-inch regulator gauges utilize a 1/4" NPT thread. However, it is always recommended to measure your existing port or consult the regulator manual to confirm compatibility before installation.

Yes, provided the gauge is kept free of oil and grease. Gauges for welding applications are typically cleaned for oxygen service, but always handle with clean hands and tools to prevent contamination.

LBM stands for Lower Back Mount. This indicates that the threaded connection protrudes from the back of the gauge case, near the bottom, which is the standard orientation for most gas regulators.

This specific model features an ABS plastic case. ABS is chosen for its durability, impact resistance, and resistance to corrosion in industrial environments.

First, ensure the cylinder valve is closed and the regulator is fully drained of pressure. Remove the old gauge with a wrench on the brass stem (never twist the case). Apply a small amount of approved PTFE tape or paste to the threads of the new gauge (ensure it is oxygen-safe if using on oxygen), and tighten firmly.

If a gauge needle does not return to zero when depressurized, the internal bourdon tube or mechanism has likely been damaged, often by over-pressurization. The gauge is no longer accurate and should be replaced immediately.

The scale reads up to 600 PSI. However, for best accuracy and longevity, gauges should typically operate within the middle third of their range. This gauge is ideal for pressures between 100 and 400 PSI.