121-8407 - Silverline Series 2-Stage Regulator CGA 510

Miller Smith Silverline Series Two-Stage Regulator

The Miller Smith 121-84-07 is a premium general-purpose regulator from the renowned Silverline 120 Series. Designed for applications requiring precise and constant delivery pressure, this two-stage regulator effectively compensates for the drop in cylinder pressure as gas is consumed. It is engineered to handle inert and non-corrosive gases such as Air, Nitrogen, CO2, and Argon, making it a versatile choice for laboratories, maintenance shops, and general plant use.

Constructed from rugged brass bar stock, the body, bonnet, and gauges are plated for superior protection against corrosion and wear. The unit features a large 1-7/8 inch diaphragm that provides exceptional sensitivity and control over the 0-60 PSIG delivery range. A key technical feature is the filtered seat, which ensures added gas stream purity and significantly extends the service life of the regulator by preventing debris from damaging the seating surface. The regulator is equipped with a CGA 510 inlet connection and a 9/16-18 Left Hand outlet.

Safety and utility are paramount in the design. A preset safety relief valve vents to the atmosphere, ensuring safe operation with non-hazardous gases. The large 2-1/2 inch single-scale gauges are easy to read, allowing operators to monitor cylinder and delivery pressure at a glance. Additionally, the body is tapped for rear panel mounting, offering flexible installation options for fixed systems. With a maximum inlet pressure rating of 3500 PSIG, this regulator delivers reliable performance in demanding industrial environments.