One-way flow control valve GRLA-3/8-QS-10-RS-D With knurled screw and lock nut Valve function=One-way flow control function, Pneumatic connection, port 1=QS-10, Pneumatic connection, port 2=G3/8, Adjusting element=Knurled screw, Mounting type=(* Threaded, * with external (male) thread)