One-way flow control valve GRLA-1/4-QS-8-RS-D With knurled screw and lock nut Valve function=One-way flow control function, Pneumatic connection, port 1=QS-8, Pneumatic connection, port 2=G1/4, Adjusting element=Knurled screw, Mounting type=(* Threaded, * with external (male) thread)