40-275-580 - Miller Smith Series 40 Heavy-Duty Nitrogen Regulator, 0-275 PSIG, CGA 580

Miller Smith Series 40 Heavy-Duty Nitrogen Regulator

The Miller Smith 40-275-580 is a premium heavy-duty single-stage regulator designed for professionals who demand precision, durability, and high flow rates in industrial environments. Part of the renowned Series 40 line, this regulator is engineered to handle the rigors of daily use in construction, fabrication, and HVAC applications. It is specifically calibrated for Nitrogen and other inert gases, featuring a CGA 580 inlet connection and a delivery pressure range of 0-275 PSIG.

At the core of this regulator's performance is Miller's exclusive Sure Seat™ filtered seat technology. This innovative design incorporates a super-fine 15-micron nickel-plated bronze filter that fully encapsulates the high-pressure seat. By preventing external debris and contamination from entering the seating area, the Sure Seat™ technology drastically reduces failure rates and extends the service life of the regulator, even in dirty shop environments. This reliability is critical for maintaining productivity and reducing downtime associated with equipment repairs.

Unlike standard regulators with rubber diaphragms, the Series 40 features a robust stainless steel diaphragm. This material choice provides two distinct advantages: it offers extreme sensitivity for precise pressure control, and it allows the regulator to be used with liquid (cryogenic) gases without the risk of freeze-up or cracking. The metal diaphragm also eliminates the need for replacement in the event of minor over-pressurization, further enhancing the unit's longevity.

Performance-wise, the 40-275-580 excels with high flow capabilities, delivering up to 16,000 SCFH—up to 25% higher than comparable heavy-duty regulators. It maintains exceptional accuracy, holding outlet pressure within ±2% of the gauge reading. The regulator also exhibits very low decay/rise characteristics, with only a 0.4 PSIG outlet rise per 100 PSIG drop in tank pressure, ensuring consistent flow as the cylinder empties. Safety is paramount, provided by an external relief valve that automatically resets after releasing excessive pressure.