Airgas Model C645D320 Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threaded SeatThis series of two stage, high purity 316 stainless steel regulators is designed for non corrosive analytical and process applications requiring precise, stable delivery pressure control. The two stage design yields a delivery pressure change of less than 0. 04 100 psi inlet change. Convoluted 316 stainless steel diaphragms provide excellent regulating characteristics and corrosion resistance, and the threaded seat design allows for internal vacuum

Multi-Perf Roll Design: Horizontally perforated every 12" with vertical zip lines for customizable sizing

This sweeping action prevents any drop out or change in the gas mixture and quickly removes any contaminants that may enter the regulator

Reduces Gas & Heat: Minimizes reaction hazards during acid neutralization

-Latest 2025 Version

These have a unique internal design to ensure all surfaces are continually swept

Office & Commercial Use

high-purity regulators are recommended for non-corrosive analytical and process applications where precise flow control is not critical

clear pressure gauge

Convoluted 316 stainless steel diaphragms provide excellent regulating characteristics and corrosion resistance

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Available in international languages and styles/Available plain or imprinted