Miller Smith 320 Series High Purity Stainless Steel Two-Stage Regulator, 0-25 PSI, CGA 330

Industrial-Grade Corrosion Resistance

For professional welders and industrial gas users, equipment failure is not an option. The Miller Smith 320-85-22-00-00 High Purity Regulator is built to withstand the harshest conditions while delivering laboratory-grade precision. This regulator is specifically designed for use with corrosive gases, utilizing a 316 stainless steel construction that resists chemical degradation. In industrial settings where exposure to aggressive chemicals is common, standard brass regulators can corrode, leading to leaks, contamination, and potential safety hazards. The 320 Series mitigates these risks with its high-grade material composition, ensuring that your gas delivery system remains safe and operational.

The two-stage design of this regulator is a significant advantage for processes requiring long-duration gas flow. Whether you are running a specialized welding application, a laser cutting assist gas system, or a chemical blanketing process, consistency is key. Single-stage regulators often require frequent adjustment as the gas cylinder empties, but the Miller Smith 320 Series maintains a steady 0-25 PSI output from a full tank down to the last few pounds of pressure. This "set it and forget it" reliability improves process consistency and frees up operators to focus on the task at hand rather than equipment monitoring.

Beyond its robust internal mechanics, the 320 Series is designed for practical usability and safety. The large, 2-1/2 inch single-scale gauges provide clear, instant readouts of both cylinder and delivery pressure, reducing the chance of reading errors. The regulator's ability to withstand internal vacuum is a crucial feature for safety during cylinder change-outs. By allowing for deep purging, it ensures that hazardous fumes are completely evacuated from the system before a new cylinder is connected, protecting the operator and the environment. The manufacturer explicitly notes the necessity of a Cross Purge Assembly with this series to maximize this safety feature.

Installation and integration are straightforward, thanks to the threaded front and rear bonnets which allow for panel mounting. This is ideal for fixed installations in gas cabinets or custom manifolds. The CGA 330 connection ensures compatibility with specific corrosive gas cylinders, preventing accidental connection to incompatible gas sources. With a maximum inlet pressure rating of 3500 PSI, this regulator is ready for high-pressure service. Trust in the legacy of Miller Smith to provide a regulator that combines the durability needed for the shop floor with the precision required for high-purity applications.