SMC带消声器的排气节流阀节流阀是通过改变节流截面或节流长度以控制流体流量的阀门。将节流阀和单向阀并联则可组合成单向节流阀。节流阀和单向节流阀是简易的流量控制阀，在定量泵液压系统中，节流阀和溢流阀配合，可组成三种节流调速系统，即进油路节流调速系统、回油路节流调速系统和旁路节流调速系统。

SMC带消声器的排气节流阀ASN2-01
ASN2-01-J
ASN2-01-S
ASN2-02
ASN2-02-J
ASN2-02-S
ASN2-03
ASN2-03-S
ASN2-04
ASN2-04-S
ASN2-M5
ASN2-N01
ASN2-N01-S
ASN2-N02
ASN2-N03
ASN2-N04
ASN2-U10/32
ASP330F-01-06S
ASP330F0106S207
ASP330F-01-06SJ
ASP330F-01-08S
ASP330F-F01-06S
ASP330F-N01-06S
ASP430F-02-06S
ASP430F-02-08S
ASP430F-F02-06S
ASP430F-N02-09S
ASP530F-03-08S
ASP530F-03-10S
ASP530F-F03-08S
ASP530F-F03-10S
ASP530F-N03-10S
ASP630F-04-10S
ASP630F-04-12S
ASP630F-N04-10S
ASP630F-N04-12S
ASQ100-01
ASQ300-02
ASQ300-03
ASQ430F-02-06S
ASQ430F0206SF20
ASQ430F-02-08S
ASQ430F0208SF20
ASQ430F-02-10S
ASQ430F-02-10S-
ASQ430F0210SF20
ASQ500-04
ASQ530F-02-06S
ASQ530F0206SF20
ASQ530F-02-08S
ASQ530F0208SF20
ASQ530F-02-10S
ASQ530F0210SF20