30Z58 - ESAB R-501 Regulator Replacement Diaphragm Assembly

Restore Precision with the ESAB 30Z58 Diaphragm

The ESAB 30Z58 Diaphragm is a critical replacement component specifically engineered for the R-501 series regulators. In the realm of industrial gas control, the diaphragm acts as the heart of the regulator, balancing the forces between the adjusting spring and the outlet pressure to maintain a steady flow of gas. Over time, rubber components can degrade due to constant flexing, exposure to gases, and environmental factors. A compromised diaphragm can lead to dangerous pressure fluctuations, gas creep (where outlet pressure rises when flow stops), or external leaks. This genuine ESAB part ensures that your heavy-duty R-501 regulator continues to operate within its specified safety and performance parameters.

Maintenance of gas equipment is paramount for facility safety and process efficiency. The R-501 is a workhorse in the industry, often found in heavy fabrication and scrap applications. When this regulator begins to show signs of instability, replacing the diaphragm is often the most effective repair. The 30Z58 is manufactured to ESAB's exact specifications, ensuring the correct diameter, thickness, and material composition required for the R-501's internal mechanism. Using non-OEM parts in high-pressure gas equipment can compromise the device's integrity; therefore, sticking to the genuine 30Z58 ensures compliance with safety standards and extends the service life of your valuable equipment.

This assembly is designed for straightforward installation by qualified technicians. It fits seamlessly into the regulator bonnet, creating the necessary seal to separate the gas chamber from the atmosphere (or the spring housing). Whether you are refurbishing older Purox or Oxweld branded R-501 units or maintaining newer ESAB models, this diaphragm is the correct SKU for the job. Investing in proper repair parts reduces downtime and prevents the premature disposal of high-quality brass regulators.

Technical Specifications

The diaphragm is constructed from high-grade elastomers chosen for their resilience and resistance to drying or cracking. It is designed to respond instantly to changes in downstream demand, opening and closing the valve seat with precision. This responsiveness is what allows the R-501 to deliver a smooth flame or consistent shield gas flow, regardless of cylinder pressure decay.