Siemens S55180-A156 24V 3-Port NC FIP Zone Valve Actuator

Description

The Siemens S55180-A156 is a 24-volt, 3-port normally closed (NC) zone valve actuator designed for reliable hydronic zoning in residential and light commercial heating and cooling systems. Engineered by Siemens Building Technology, this actuator delivers precise flow control through Female Iron Pipe (FIP) connections, making installation straightforward with standard piping configurations.

Key Features

• 24V operating voltage for compatibility with standard low-voltage control systems
• 3-port valve configuration for diverting or mixing hydronic flow
• Normally Closed (NC) operation — valve closes upon loss of power for fail-safe performance
• Female Iron Pipe (FIP) connections for easy integration with existing piping
• Compact actuator design suited for residential and light commercial hydronic zoning
• Siemens Building Technology quality construction for long-term reliability

Applications

• Hydronic zone heating and cooling systems
• Radiant floor heating distribution
• Fan coil unit control
• Chilled and hot water distribution systems

Product Specifications

• Brand: Siemens Building Technology
• SKU: S55180-A156
• Voltage: 24V
• Ports: 3-Port
• Fail-Safe Mode: Normally Closed (NC)
• Connection Type: FIP (Female Iron Pipe)