22351 - ESAB 22351 Cap Pin for R-6700 Regulators

Restore Precision to Your R-6700 Regulator

The ESAB 22351 Cap Pin is a critical replacement component designed exclusively for the R-6700 series of industrial gas regulators. In the world of heavy-duty welding and cutting, the R-6700 series (often associated with the legacy Oxweld and Purox lines) is renowned for its high flow capacity and rugged durability. However, even the toughest equipment requires maintenance to ensure safety and performance. The cap pin plays a vital role in the mechanical actuation of the regulator, sitting within the bonnet assembly and facilitating the transfer of force from the adjusting screw to the internal spring mechanism.

Over time, mechanical wear and tear can degrade small internal components like the cap pin. A worn or bent pin can lead to stiff adjustment knobs, inconsistent pressure settings, or "creep"—where the delivery pressure rises slowly when the torch valves are closed. Replacing the cap pin with a genuine ESAB 22351 ensures that your regulator operates with the smoothness and precision it was designed for. Using OEM parts is essential for maintaining the safety certifications and flow characteristics of your gas control equipment.

This part is manufactured to ESAB's exacting tolerances, ensuring a perfect fit within the R-6700 housing. Whether you are rebuilding a regulator for an oxygen, acetylene, or inert gas setup, ensuring the integrity of the bonnet assembly is paramount. This pin is made from high-grade metal alloys to withstand the mechanical stresses of daily pressure adjustment. By choosing genuine ESAB parts, you extend the service life of your valuable regulator assets and minimize downtime in your production environment.

Importance of Regulator Maintenance

Regular inspection and repair of gas regulators are crucial for shop safety. A malfunctioning regulator can pose serious hazards, including gas leaks or diaphragm failure. When rebuilding a unit, it is recommended to inspect all wear items, including the cap pin, slip ring, and adjusting screw. The ESAB 22351 is the direct factory replacement, eliminating the guesswork associated with generic aftermarket parts that may not meet the specific hardness or dimensional requirements of the R-6700 design.