31-50-320 - Smith 30 Series CO2 Flow Gauge Regulator, 10-50 SCFH, CGA 320

Smith 30 Series Single-Stage CO2 Flow Gauge Regulator

The Smith 30 Series Flow Gauge Regulator (SKU: 31-50-320) represents a pinnacle in medium-duty gas regulation engineering, designed specifically for Carbon Dioxide (CO2) applications. Manufactured in the United States, this regulator is built around a forged brass body that ensures structural integrity and longevity in harsh industrial environments. The unit features a single-stage design that has been optimized to minimize the "decay/rise" characteristic common in standard regulators. As the pressure in the supply cylinder drops, typical regulators allow the outlet pressure to creep upward; the Series 30 is engineered to significantly reduce this effect, providing a stable flow rate throughout the life of the cylinder and reducing gas waste.

At the heart of the 31-50-320 is Smith's proprietary Sure-Seat™ technology. This filtered high-pressure seat assembly utilizes a copper-nickel filter to encase the high-pressure seat, effectively blocking debris and particulate matter from entering the seating area. This innovation is critical for preventing regulator failure and "creep," thereby extending the maintenance intervals and overall service life of the unit. The diaphragm is constructed from a durable, reinforced neoprene-nylon composite, offering superior sensitivity and response compared to standard stainless steel or rubber diaphragms. This allows for precise adjustment of outlet pressure and flow.

The regulator is equipped with two 2-inch diameter gauges featuring shatter-resistant polycarbonate lenses. The inlet gauge reads from 0-4000 PSI, while the delivery gauge is calibrated for flow readings between 10 and 50 SCFH (Standard Cubic Feet per Hour). Accuracy is maintained within +/- 2% of the gauge reading, ensuring that process parameters are strictly adhered to. Safety is paramount in the design, featuring a self-reseating pressure relief valve that automatically vents excessive pressure in the event of a surge and resets once normal pressure is restored. The bonnet is nickel-plated to reflect residual heat and resist corrosion, further enhancing the unit's durability.