112-4002 - Miller Smith Silverline 112 Series Single Stage CO2 Regulator, 0-100 PSI, CGA 320

Miller Smith Silverline Series General Purpose Regulator

The Miller Smith 112-40-02 Silverline Series Regulator is a robust single-stage solution designed for the regulation of Carbon Dioxide (CO2) in general industrial applications. Engineered by Miller's gas equipment division (formerly Smith Equipment), this regulator combines traditional durability with modern manufacturing precision. The unit is constructed from rugged brass bar stock, ensuring it can withstand the physical demands of shop environments. To further enhance its longevity, the body, bonnet, and gauges feature a plated finish that resists corrosion and wear, making it an ideal choice for maintenance, repair, and fabrication settings.

At the core of the 112-40-02 is a large 1-7/8 inch diaphragm which provides sensitive and accurate pressure control within the 0-100 PSIG delivery range. While classified as a general-purpose regulator, it incorporates advanced features such as a filtered seat. This design element is critical for maintaining gas stream purity and protecting the seating mechanism from particulate damage, which is a common cause of regulator failure. The regulator is equipped with a CGA 320 inlet connection specifically for CO2 cylinders and a 1/4" FNPT outlet, allowing for versatile integration into various hose or piping configurations.

This model is part of the 110 Silverline Series, recommended for applications where extremely precise control of delivery pressure is not critical, but reliability is paramount. It is not intended for high-purity applications requiring minimal inboard diffusion, but it excels in standard pneumatic and shielding gas tasks. The regulator also features large, easy-to-read 2-1/2 inch gauges and is tapped for rear panel mounting, offering flexibility in installation.