Overview
The MAC 55B-11-PI-590JJ solenoid valve is a compact, pilot-operated 3-way pneumatic valve rated for 24VDC operation. This unit features 1/4″ NPTF threaded female pneumatic ports and internal pilot air configuration. The balanced spool design maintains consistent performance regardless of inlet restrictions or exhaust back pressure, making it suitable for demanding industrial pneumatic systems.
Key Features
- 3-way, 2-position normally closed (NC) configuration for reliable on/off control
- Balanced spool design unaffected by back pressure or inlet restrictions
- Pilot-operated solenoid with internal pilot air—convertible to external pilot via simple adaptor rotation
- Flow capacity (Cv): 1.4 for efficient pneumatic actuation
- Large checked accumulator supplies consistent pilot air and spring return for reliable shifting
- Rapid response and cycle rate for time-sensitive pneumatic control
- Compatible with both lubricated and non-lubricated air systems
- Optional manual operator available for manual override
Technical Specifications
- Operating Voltage: 24VDC, 2.5W solenoid power
- Valve Function: 3-way, 2-position, normally closed (NC)
- Pressure Range: 30–150 PSI (vacuum to 150 PSI capable)
- Port Size: 1/4″ NPTF main ports; 3/8″ NPTF exhaust port
- Pilot Configuration: Internal pilot air, convertible to external
- Flow Coefficient (Cv): 1.4
- Spool Type: Balanced piston
- Manual Operator: None (JJ suffix indicates no manual operator)
- Electrical Connection: Square plug-in DIN 43650 connector (590 suffix)
- Dimensions: 113mm H × 46mm W × 105mm D (inline configuration)
- Material: Ductile iron body, steel mechanical components
- Spring Reset: Pneumatic/steel mechanical spring return—monostable operation
Typical Applications
- Pneumatic automation and control circuits requiring precise directional control
- Machine tool air systems and manufacturing equipment actuation
- Industrial process control and valve pilot staging
- Pneumatic actuator sequencing and air logic circuits
- Vacuum systems (30–150 PSI range supports vacuum-to-pressure cycling)
- Air preparation and distribution in compressed air networks
Compatibility & Replacements
Compatible With
- 24VDC pneumatic control systems with standard solenoid enclosures
- ISO 1, ISO 2, ISO 3 mounting manifolds and cavity systems
- Pneumatic actuators (cylinders, air motors) requiring directional control
- Industrial PLC and relay logic control circuits
- Both lubricated and non-lubricated (dry) air systems
- Line-of-sight mounting in inline or cavity configurations
Replaces / Drop-In Replacement For
- MAC 55B-11-PI-590JA: Equivalent 55 series unit with square connector (JA suffix); substitute available if connector compatibility confirmed
- Other MAC 55B Series variants: Verify specific solenoid power (2.5W vs. 6W) and connector type (JJ vs. JA vs. JC) for accurate cross-reference
- Similar 3-way pilot-operated solenoid valves from other manufacturers—verify port sizing, pressure rating, and pilot configuration before substitution
Works With
- 24VDC solenoid coils and standard DIN 43650 square connector solenoid enclosures
- Pneumatic pilot air from external sources or internal system accumulator
- Manual or electric switching logic for monostable on/off control
- Pneumatic gauges and pressure monitoring equipment rated 30–150 PSI
- Industrial air preparation equipment (filter, regulator, lubricator)
