One-Way Flow Control Valve Grla-M5-QS-6-Rs-D with Knurled Screw and Lock Nut Valve Function=One-Way Flow Control Function for Exhaust Air, Pneumatic Connection, Port 1=Qs-6, Pneumatic Connection, Port 2=M5, Adjusting Element=Knurled Screw, Mounting Type=Threaded, Festo