AS speed controller tamper proof and flat head screwdriver adjust variants require a tool to change settings.
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Bore size With One-touch fitting U01 U02 U03 U04 1 8 1 4 3 8 1 2 Needle Valve/Flow Characteristics AS2201F-01, AS2211F-01 AS2301F-01, AS2311F-01 AS2201F-02, AS2211F-02 AS2301F-02, AS2311F-02 Inlet pressure: 0.5 MPa Inlet pressure: 0.5 MPa Flow rate (/min (ANR)) Flow rate (/min (ANR)) Effective area (mm2) Effective area (mm2) Number of needle rotations Number of needle rotations AS3201F, AS3211F