MAC solenoid valve 55 seriesThe MAC 55 Series is a 3-way balanced spool valve piloted by a small direct operated
balanced poppet valve. This is an extremely versatile valve: 1. It can be converted for
use in vacuum. 2. It can be changed from an Internal Pilot to an External Pilot function
by simply rotating the adapter between the pilot and main valve bodies. 3. It can also
be converted to a remote air operated valve by removing the solenoid pilot assembly -
just to name a few.