623-03090000 - Miller Smith Silverline 620 Series Two-Stage High Purity Regulator, CGA 580, 0-250 PSI

Precision Control for Specialty Gases

The Miller Smith 623-03-09-00-00 Silverline High Purity Brass Two-Stage Regulator is engineered for applications demanding the highest levels of stability and cleanliness without the cost of a full stainless steel body. Part of the renowned 620 Silverline Series, this regulator utilizes a two-stage reduction mechanism. This design is critical for analytical and high-precision processes, as it maintains a constant delivery pressure (0-250 PSI) regardless of fluctuations in the cylinder's inlet pressure. As the cylinder drains from 3500 PSI down to empty, the output remains stable, eliminating the "supply pressure effect" common in single-stage alternatives.

Construction quality is paramount in the Silverline series. The body is machined from brass bar stock and finished with nickel plating, providing excellent diffusion resistance and durability. At the heart of the regulator lies a 316 stainless steel diaphragm. Unlike elastomeric diaphragms, stainless steel prevents off-gassing and absorption, ensuring the purity of the gas stream is maintained. The metal-to-metal seal between the body and diaphragm further enhances leak integrity, boasting a design leak rate of 1 x 10^-9 cc/sec He. This specific model comes equipped with a CGA 580 inlet for inert gases and a 1/4" tube fitting outlet, making it ready for immediate integration into laboratory tubing systems.

Safety and versatility are also key components of the 623-03-09-00-00. The regulator bonnet features capturable 1/16" FNPT vent ports, allowing for the safe venting of gases if required in the event of a diaphragm failure. The unit is equipped with a 2-1/2 inch single scale gauge for clear pressure readings and a filtered seat to prevent debris from compromising the seal. It is an ideal solution for non-corrosive specialty gas delivery where precision is mandatory.