A solenoid valve that can also be worked by hand. The lever gives you a way to move the function when the electrics are dead — flat battery, blown fuse, failed switch, or simply a machine being commissioned before the wiring is finished.

On anything that lifts or holds a load, that override is not a convenience, it is how you get the load down safely when something fails.

Spool options follow the standard Cetop pattern — 3C2, 3C3, 3C4 and 3C6 correspond to the usual closed, tandem, float and open centre conditions. Tell us the function and we will confirm the right one.