SFA71U Siemans 24V Zone Valve Actuator

The Siemens SFA71U is a genuine OEM 24 VAC electronic zone valve actuator used in HVAC hydronic heating and cooling systems. It is a 2-position, normally closed (N.C.), spring-return actuator designed to operate Siemens 599 Series zone valves. The actuator controls chilled water or hot water flow through the valve body to regulate heating and cooling zones.

Product Key Specifications

• Manufacturer: Siemens

• Model Number: SFA71U

• Product Type: Zone Valve Actuator

• Voltage: 24 VAC

• Control Signal: 2-Position (Open/Close)

• Valve Position: Normally Closed (NC)

• Return Type: Spring Return

• Application: Hydronic HVAC Zone Valves

• Compatible Valve Series: Siemens 599 Series

• Stroke: 0.1 in (2.5 mm)

• Force Rating: 105 N (approx. 24 lb)

• Run Time: Approx. 10 seconds

• Power Consumption: 9.8 VA

• Frequency: 50/60 Hz

• Manual Override: Yes

• Position Indicator: Yes

• Mounting: Direct coupled, tool-free installation

• Enclosure Rating: NEMA 1 (indoor use)

• Operating Temperature: 41°F to 122°F

• Certification: UL Listed for plenum installations