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Mac Valves 912B-PM-221CAAB 4/2 Air and Gas Solenoid Valve - 1/4 in. NPTF, 24V

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0.99 lbs
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Single operator solenoid valve for air and gas functions in car wash, vacuum, and other applications. Provides fast, consistent response time. 1/4" NPTF ports, 24VAC, Conduit 1/2" NPS enclosure with 24" leads. Part of the MAC 900 Series.

*Picture is representative of of the MAC 900 Series. Valve may have a different appearance - read specs carefully.*

Product Description

4/2 Solenoid for Air and Gas Only

The MAC 900 Series of inline solenoid valves includes excellent options for car wash, vacuum, diverter, or selector applications using air and gas transfer. Suitable for functions where fast response time, high shifting forces and long life are crucial, such as underbody spray arch change in the PDQ LaserWash 4000 automatic. The MAC Valves 912B-PM-221CAAB is a single operator 4/2 internal valve with a short stroke, conical seats, and a balanced poppet. The balanced poppet design facilities using the same valve for many functions without the necessity of changing any parts.


  • 1/4" NPTF port size
  • 4/2 valve
  • 24VAC, 50/60 Hz
  • Temperature Range: 0°F - 120°F (-18°C - 50°C)
  • Pressure Range: 20 - 120 PSI
  • Single, non-locking manual operator
  • Conduit 1/2" NPS enclosure with 24" leads
  • For use with air, vacuum, and inert gas ONLY

Series Features:

  • Patented MACSOLENOID for fastest possible response times
  • Bonded balanced poppets for high flow, precise repeatability, and consistent operation.
  • Balanced poppet design permits versatility in piping.
  • Use on lube or non-lube service.
  • Extremely high cycle rates.
  • Extremely long service life due to unique poppet cushions.
  • Manual overrides as standard.
  • Formerly Part #MAC912BPM221

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