35Z81 - Purox R-52 Diaphragm Attaching Screw

Genuine ESAB 35Z81 Diaphragm Attaching Screw for R-Series Regulators

The ESAB 35Z81 is a specialized replacement component designed for the maintenance and repair of Purox R-series industrial gas regulators. Specifically identified as the Diaphragm Attaching Screw, this part plays a pivotal role in the internal mechanics of the regulator. It is engineered to securely fasten the diaphragm plate and assembly to the regulator stem or mechanism, ensuring that the diaphragm moves correctly in response to pressure changes. This precise interaction is what allows the regulator to maintain a steady outlet pressure despite fluctuations in the cylinder pressure, making this small screw a critical component for performance and safety.

This part is compatible with several legacy and current heavy-duty regulators, including the Purox R-50, R-51, and R-52 models. These regulators are workhorses in the welding and cutting industry, known for their durability and high flow capacities. Over time, during routine maintenance or complete rebuilds, internal threads can become worn, or small components can be misplaced. Using a genuine ESAB (Purox) replacement ensures that the thread pitch, length, and material strength match the original specifications exactly. Substituting with non-OEM hardware can lead to improper seating of the diaphragm, potential gas leaks, or erratic pressure delivery, which compromises the safety of the oxy-fuel system.

Industrial maintenance teams and regulator repair technicians rely on the 35Z81 to restore equipment to factory standards. The screw is manufactured from high-quality metal alloys designed to resist corrosion and withstand the mechanical stresses of the diaphragm's constant flexing. When rebuilding an R-52 regulator, it is essential to inspect all internal fasteners. If the diaphragm attaching screw shows signs of thread damage, head rounding, or corrosion, immediate replacement is recommended to prevent future failure. This part is typically installed during the reassembly phase of the regulator body, requiring appropriate tools and knowledge of regulator construction to ensure the correct torque and alignment are applied.

By choosing the ESAB 35Z81, you are investing in the longevity of your gas control equipment. Proper maintenance of the diaphragm assembly not only extends the life of the regulator but also ensures the safety of the operator by preventing internal failures that could lead to hazardous gas leaks. This component represents ESAB's commitment to supporting their equipment with high-quality, precise spare parts.