Numatics L23BA452B Pneumatic Solenoid Valve MAC 55B-22-RA 24VDC 14.5-145 PSIG

Numatics L23BA452B Pneumatic Solenoid Valve MAC 55B-22-RA 24VDC 14.5-145 PSIG

This is a pneumatic solenoid valve assembly combining a Numatics L23BA452B directional control valve with a MAC 55B-22-RA remote air pilot valve. The Numatics valve is a 4/3 directional control solenoid valve operated by a 24VDC electromagnetic coil and is designed to route and control air flow in pneumatic circuits across a broad operating pressure range. The MAC 55B-22-RA remote air valve provides pilot pressure control with an internal spring return mechanism, enabling precise actuation and fail-safe operation of the main valve.

Specifications & What's Included

• Numatics valve model: L23BA452B
• MAC remote air valve model: 55B-22-RA
• Solenoid coil part number: 226-749B
• Operating voltage: 24VDC
• Coil current draw: 0.15A
• Duty cycle: 100% continuous
• Numatics valve pressure range: 14.5–145 PSIG (1–10 BAR)
• Numatics main valve port size: 3/4 inch
• MAC valve port size: 3/8 inch NPTF
• MAC valve pressure range: Vacuum to 150 PSI
• MAC valve return: Internal spring actuated
• Certifications: UL listed, VDE 0580
• Manufacture date: July 26, 1992
• Includes: Numatics L23BA452B valve body with factory-installed 226-749B solenoid coil, MAC 55B-22-RA remote air valve assembly, brass compression fittings, and tubing connection stubs as shown in photos

Applications

Pneumatic solenoid valves of this type are fundamental components in industrial automation, pneumatic machinery control, and process automation systems. The combination of a directional control valve with a remote air pilot allows precise, solenoid-triggered switching of compressed air flow in factory floor equipment, pneumatic presses, cylinders, actuators, and control circuits. These assemblies are standard in manufacturing environments where reliable air-flow control and repeatable actuation cycles are essential. The Numatics L23BA452B and MAC series are well-established, durable industrial components. This particular assembly dates from the early 1990s, representing the era when compact, modular pneumatic control architectures became standard in plant automation; similar assemblies remain in service today in legacy systems and equipment maintenance. The 24VDC coil voltage and integrated pilot valve configuration make this assembly suitable for integration into automated process control setups, machine builders' designs, and retrofit applications where solenoid-actuated directional control is required.