Adjustable 2nd Stage RegulatorMODEL NO: AS-202 ADJAdjustable 2ND STAGE REGULATORDownstream demand valve with external-air intake adjustment150PSI maximum intermediate pressure1.0~1.2 CIW(column inches of water)-inhalation effort (ADJ-KNOB ON MAX)1.1 CIW exhalation effort30+ SCFM (air supply:3000psi)Weight : 237 gramsADJUSTABLE