Description
The ASCO SC8551A17MS is a 1/4″ spool-type directional control valve engineered for reliable, precise fluid and air flow management in demanding HVAC, pneumatic, and industrial control applications. With a 4-way, 5-port, 2-position configuration and 120V AC coil, this valve delivers consistent directional switching to support actuators, cylinders, and other pneumatic or hydraulic devices.
Key Features
- 4-way, 5-port, 2-position spool valve design for versatile directional flow control
- 1/4″ port size for easy integration into standard piping and tubing systems
- 120V AC solenoid coil for compatibility with common control panel voltages
- Spool-type internal mechanism provides smooth, dependable switching action
- Designed for use with air, inert gases, and compatible media in HVAC and industrial systems
- Compact, durable construction suitable for panel mounting or inline installation
Product Specifications
- Brand: ASCO
- SKU / Part Number: SC8551A17MS
- Port Size: 1/4″
- Valve Type: Spool Valve
- Configuration: 4-Way, 5-Port, 2-Position
- Coil Voltage: 120V AC
Applications
- Pneumatic actuator and cylinder control in HVAC systems
- Directional flow switching in building automation and process control
- Industrial pneumatic circuits requiring 4-way directional control
- Air handling and damper actuator control systems
ASCO is a globally recognized leader in solenoid and spool valve technology, trusted by HVAC professionals and industrial engineers for quality, longevity, and performance. The SC8551A17MS is an ideal replacement or upgrade valve for systems requiring dependable 4-way directional control at 120V.







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