It is is the same as SMC type. Product Characterization1. QA series Feature (SMC Type)QA series FRL has standard dimensions and ... steady performance.It is same style as SMC.Regulators insure operation in steady pressure, decrease damage of valve ... QAC2010-02, QAC3010-02, QAC3010-02, QAC4010-04, QAC4010-06, QAC5010-06, QAC5010-10(2) Metal Protective Hood: QAC2010-01, QAC2010-02 ...