SMC带消声器的排气节流阀ASN2系列型号有：ASN2-M5   ASN2-01   ASN2-02   ASN2-03   ASN2-04   ASN2-M5-S ASN2-01-S   ASN2-02-S   ASN2-03-S

ASN2-04-S     ASN2-N01   ASN2-N02   ASN2-N03   ASN2-N04   ASN2-N01-S   ASN2-N02-S   ASN2-N03-S   ASN2-N04-S