Overview
The MAC 45A-MAJ-DDAJ-1KJ solenoid valve is a direct solenoid operated 4-way poppet valve designed for high-reliability pneumatic control applications. The MAC 45 Series features a short stroke solenoid, balanced poppet and conical seats that translate into high shifting forces, fast consistent response times, and long life. The 45A model is compact, feature-rich, and ideal for automation equipment requiring fast cycle rates and durable valve operation.
Key Features
- Patented MACSOLENOID for fastest possible response times with bonded balanced poppets for high flow precision and repeatability
- Valves can be piped as 4-way / 3-way or 2-way / normally closed or normally open or used for vacuum / diverter / selector applications
- Extremely high cycle rates and extremely long service life due to unique poppet cushions
- Use on lube or non-lube service
- Manual overrides as standard
- Patented MACSOLENOID virtually burn-out proof on AC service
Technical Specifications
- Series: MAC 45
- Configuration: 4-Way, Direct Solenoid Operated
- Poppet Type: Balanced Poppet with Conical Seats
- Port Connection: 1/8″ NPT (standard for 45A base model)
- Solenoid Voltage: 24 VDC typical (5.4W)
- Manual Operator: Non-Locking Manual Override
- Electrical Connection: Square Connector (Male Only)
- Weight: 0.20 lbs (approximately)
- Pressure Range: Vacuum to +120 psi
- Material: Steel
Typical Applications
- Automation control systems and automated machinery
- Robotic arm actuation and pneumatic cylinder control
- Diverter and selector valve applications
- High-cycle pneumatic equipment
- Lube and non-lube service environments
- Vacuum and compressed air systems
Compatibility & Replacements
Compatible With
- Standard pneumatic systems (vacuum to 120 psi rated)
- 24 VDC solenoid power supplies
- Compressed air networks with 1/8″ NPT ports
- Industrial PLC and automation controllers
- Pneumatic cylinder and actuator circuits
Replaces / Drop-In Replacement For
- 45A-AA1-DDAJ-1KJ (NPT port variant)
- 45A-AC1-DDAJ-1KJ (BSPPL port variant)
- 45A-SC1-DDAJ-1KJ (BSPPL alternative)
Works With
- Pneumatic hose and fittings (1/8″ NPT female ports)
- 24 VDC relay circuits and solid-state controllers
- Standard industrial solenoid leads and connectors
- Surge suppression modules (optional)
- Flow control valves and manifold assemblies







