0731-0018 - Victor 0731-0018 Replacement Diaphragm for VTS Series Regulators

Precision Replacement for Victor VTS Regulators

The Victor 0731-0018 Diaphragm Assembly is a critical replacement component designed specifically for the maintenance and repair of Victor's heavy-duty two-stage regulators, including the renowned VTS 450 and VTS 700 series. In the realm of industrial gas control, the diaphragm serves as the sensing element that balances the downstream pressure against the setting spring, modulating the valve opening to maintain a constant delivery pressure. Over time, diaphragms can lose elasticity, develop micro-cracks, or suffer from chemical degradation, leading to issues such as pressure creep, inconsistent flow, or external leaks.

This assembly is manufactured to Victor's exacting original equipment specifications, ensuring that it meets the rigorous safety and performance standards required for high-pressure gas applications. The assembly typically includes the diaphragm material itself—often a specialized elastomer reinforced for strength and flexibility—bonded or mechanically fastened to the center plate assembly. This integration simplifies the rebuild process, ensuring that the critical interface between the diaphragm and the valve stem is correctly aligned.

Using genuine Victor parts like the 0731-0018 is essential for maintaining the integrity of the two-stage regulation process. Two-stage regulators are favored for their ability to provide constant delivery pressure regardless of cylinder pressure decay. The diaphragm in the second stage (which this part often services) is particularly sensitive to fluctuations and requires a precise response profile. Installing a generic or ill-fitting diaphragm can compromise this sensitivity, leading to delivery pressure spikes or 'end-of-cylinder' drift that two-stage regulators are designed to eliminate. Industrial MRO professionals rely on this specific SKU to extend the service life of valuable gas control assets, ensuring that welding, cutting, and laboratory gas supply systems remain safe and accurate.