One-Way Flow Control Valve Grlz-1/8-Qs-8-D For Supply Air Flow Control, With Swivel Joint. Valve Function=One-Way Flow Control Function For Supply Air, Pneumatic Connection, Port 1=Qs-8, Pneumatic Connection, Port 2=G1/8, Adjusting Element=Slotted Head Screw, Mounting Type=Threaded