M*F3 are shut-off valves, solenoid or hydraulically actuated, with or without spool position monitoring, in modular version, with mounting interface according to ISO 4401-03 standard.
Its are placed under directional control servovalves in order to guarantee the safety of circuit when a power failure occurs.
Spools with float, closed, parallel or cross position in de-energized condition are available.
Versions with spool monitoring do not have manual override and can not be disass-embled, because of their characteristics and their possible use on machinery subject to safety requirements.
The spool position monitoring is available either for initial position or for actuated position.