One-Way Flow Control Valve Grlz-M5-QS-3-LF-C for Supply Air Flow Control, with Swivel Joint. Valve Function=One-Way Flow Control Function for Supply Air, Pneumatic Connection, Port 1=Qs-3, Pneumatic Connection, Port 2=M5, Adjusting Element=Slotted Head Screw, Mounting Type=Threaded, Festo