Airgas Model C645A540 Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threaded Seat Low Pressure Model 301 features a brass

Model 301 features a brass body

These regulators also have a check valve cylinder connection that prevents contaminates from entering during cylinder changeover

Meets all MUTCD and ITE specifications in 12 volt configuration

The regulator body is machined from brass bar stock

Airgas Model C645A540 Stainless Steel High Purity Two Stage Pressure Regulator With 1/4" FNPT Connection And Threaded Seat Low Pressure Model 301 features a brassThis 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