MAC 57 Series Valve

• The patented MACSOLENOID® with its non-burn out feature on AC service.
• Seven valve functions in one valve.
• Balanced spool unaffected by back pressure in the exhaust.
• A large checked accumulator which supplies the pilot and air/spring return for consistent shifting.
• A triple rated coil for 120/60, 110/50 or 24 VDC (6 Watt).
• Use on lube or non-lube service.
• Various types of manual operators and solenoid enclosures.
• Optional low wattage DC coils down to 1 watt.
• Optional explosion proof models designed to meet UL & CSA standards for Class I, Groups B, C, D and Class II, Groups E, F and G. (NEMA equivalent of Class I is NEMA 7; Class II is NEMA 9).

• 3-Way Normally Open or Normally Closed (solenoid or remote air).
• 2-Way (by plugging Exhaust port), Normally Open or Normally Closed (solenoid or remote air).
• Internal pilot or External pilot for vacuum to 25 PSI main valve pressures on solenoid models.
• Manual and mechanical operators available.

1. Balanced spool, immune to variations of pressure.
2. Short stroke with high flow.
3. Large spool area provides maximum shifting forces.
4. Checked accumulator guarantees maximum pilot pressure.
5. Powerful return force thanks to the combination of mechanical and air springs.
6. Bonded spool with minimum friction, shifting in a glass-like finished bore.
7. Wiping effect eliminates sticking.
8. Pilot valve with balanced poppet, high flow, short and consistent response times.