The MAC 82 Series is a versatile 4-way solenoid piloted spool valve.  This  series features our balanced poppet in the pilot and an air/spring return  for consistent shifting regardless of inlet pressure flucuations.  Our  balanced spool means the valve can be piped as a 4-way, 3-way, 2-way,  normally closed or normally open or can be used for vacuum, diverter or  selector applications.  Our one piece bonded seal spool means longer life  and easy maintenance.    Operational Benefits    1. Balanced spool, immune to variations of pressure.  2. Short stroke with high flow.  3. The piston (booster) provides maximum shifting  forces.  4. Powerful return force thanks to the combination of  mechanical and air springs.  5. Bonded spool with minimum friction, shifting in a  glass-like finished bore.  6. Wiping effect eliminates sticking.  7. Pilot valve with balanced poppet, high flow, short  and consistent response times.  8. Long service life.