Roller lever valve R/O-3-PK-3 With barbed fitting connection for tubing ND 3 mm. Depending on the choice of connections, normally-open or normally-closed function. Valve function=3/2 open/closed, monostable, Type of actuation=mechanical, Standard nominal flow rate=80 l/min, Operating pressure=0 - 8 bar, Design structure=Piston seat