The 4207 is used for actuating hydraulic or mechanically actuated reverse reduction gear boxes. The 4207 are spring-centred, requiring only 2 control lines for engaging either forward or reverse clutch.
The 4207 is available in either a 2 direction position actuator at 10 to 80 PSI (.7 to 5.5 BAR), or a 3 position self-centering cylinder at 25 to 55 PSI (1.7 to 3.8 BAR).