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The MAC 55B-12-PI-112CA is a 3-way, normally closed, single solenoid air control valve designed for high-performance in industrial environments like concrete batch plants. It is commonly used to actuate air-operated devices such as aeration blowers, butterfly valves, and air cylinders that manage the flow of materials. This valve is a critical component for plant automation and is often replaced during scheduled maintenance to prevent costly downtime from pneumatic system failures. It features a non-burnout AC solenoid, a checked accumulator for consistent shifting, and can be used in lubricated or non-lubricated air service.
Technical Specifications
BrandMAC Valves
Series55B
Part Number55B-12-PI-112CA
TypeSingle Solenoid, Piloted
Function3/2-Way, Normally Closed
Voltage110/120V AC, 50/60Hz
Port Size3/8" NPTF
Exhaust Port3/8" NPTF
Electrical Connection1/2" NPS Conduit
Operating Pressure Range30 to 150 PSI
Flow Coefficient (Cv)1.6
Temperature Range0°F to 120°F (-18°C to 50°C)
Key Features
Patented MACSOLENOID with non-burnout feature on AC service
3/2-way normally closed (NC) single solenoid piloted valve
120V AC (110V/50Hz, 120V/60Hz) solenoid with 1/2" NPS conduit connection
3/8" NPTF ports for air line connections
Balanced spool design is unaffected by back pressure
Locking recessed manual override for testing and diagnostics
Can be used on lubricated or non-lubricated air service
Fits These Mixers
Vince Hagan, CMW, Con-E-Co, Erie Strayer, Stephens, Donaldson Torit. This valve is commonly found in the air systems of Stephens concrete batch plants, where it is used to activate the Fuji Aeration blower. It is also a versatile component used in other batch plant brands for general pneumatic control functions.
All measurements ± standard manufacturing tolerance.
Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.
Specifications
Specifications
Manufacturer
MAC
Sub Category
Air Valve Controls
Documentation
No documents available
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