Overview
The MAC 55B-11-PI-590JJ is a compact, pilot-operated 3-way solenoid valve from MAC Valves’ 55 Series. Rated for 24VDC 2.5W operation with internal pilot air configuration, this valve combines low power consumption with balanced spool design for stable, repeatable control across pneumatic circuits. The 55 Series design enables vacuum-rated operation and field conversion between internal and external pilot functions without disassembly.
Key Features
- 3-way, 2-position normally closed (NC) function with monostable spring return operation
- Pilot-operated with internal pilot air—maintains consistent response across pressure ranges
- Balanced poppet pilot valve eliminates spool stiction and back-pressure sensitivity
- Low-power 2.5W 24VDC solenoid—reduces coil heating and enables extended on-time duty
- Square DIN 43650 connector (standard electrical interface)
- Field-convertible between internal pilot and external pilot modes
- Non-burn-out solenoid design suitable for continuous AC or DC service
Technical Specifications
- Pressure range: 30–150 PSI (2–10 bar)
- Voltage: 24 VDC
- Power consumption: 2.5 W
- Port size: 1/4″ NPTF (female, threaded)
- Exhaust port: 3/8″ NPTF (female)
- Mounting: Inline individual (SAE cavity not required)
- Pilot type: Internal pilot air
- Connector type: Square DIN 43650 (plug-in)
- Flow coefficient (Cv): 1.4 (nominal)
- Dimensions (HxWxD): 113 × 46 × 105 mm
- Spool type: Piston spool with balanced design
Typical Applications
- Pneumatic actuator control in assembly lines and transfer systems
- Machine tool air distribution and sequencing
- Packaging and labeling equipment
- Material handling and conveyor valve switching
- Vacuum and non-lube pneumatic service
- Low-power industrial automation control circuits
Compatibility & Replacements
Compatible With
- MAC 55 Series valve manifolds and sandwich cavity assemblies
- Industrial pneumatic circuits rated 30–150 PSI
- 24VDC control systems and PLC I/O modules
- Standard pilot-operated solenoid control logic
- Vacuum-rated pneumatic systems (with standard conversion)
Replaces / Drop-In Replacement For
- MAC 55B-11-PI-590JA (590JA and 590JJ use identical porting and control function; verify connector and terminal type)
- Other MAC 55 Series variants with matching cavity code (55B) and port configuration (11)
Works With
- MAC Valves pilot air accumulators and auxiliary valve assemblies
- Standard 24VDC fieldbus I/O modules (discrete 24V switching outputs)
- PLC solenoid coil modules and safety-rated control logic
- Integrated manifold stacks using MAC SAE cavity standards
- Industry-standard pneumatic hose and fitting systems
