RG-9B Second Stage Regulator Specification Non-Adjustable Second Stage Regulator Downstream demand valve with twin air intake Intermediate Pressure: 145 PSI Cracking effort: 1.0~2.0 CIW (Column Inches of Water) Presetting: 1.5 CIW Flow rate: 30+SCFM (air supply: 3000 PSI) Color: Black, Black/Blue, Black/Grey, N.Yellow/Black Inquire Now View More Details