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HVAC Control Valves

FCU Electric Valve(DN15-DN25)

The Series SFS Electric Two-way or Three-way Valve is designed for FCU cooling or heating pipes. Through opening and closing the pipe, the valve can effectively regulate the room temperature. The valve’s actuator has spring auto-reset function. If the actuator suddenly loses power, the spring will help the actuator to reset and shut down automatically.

- On/off control ,both normally closed two-way structure and diverting three-way structure are available
- Fully enclosed one-way hysteresis synchronous motor drive with water-proof function
- Spring auto-reset function enables automatic shutoff when an emergent power loss happens
- Removable actuator for convenient repair and maintenance
- Rotary motion valve disc
- High shutoff pressure

Operating Principles: 
The valve is normally closed when receiving no signals. If the room thermostat emits an opening signal to open the valve, cold / hot water will go through the FCUs to provide the room with cooling / heating capacity. When the room temperature reaches the set temperature, the room thermostat will send a closing signal to the actuator to close the valve, so that the cold / hot water in the pipe will not influence the room temperature any more. By opening and closing the valve, the room temperature is kept within the setting range.

Technical Specification: 
Dimensions: DN15-DN25
Working Temperature: 0~90℃
Working Pressure: PN16
Fluid Medium: Water / Ethylene glycol
Connection: Threaded Connection
Connection Standard: EN 10226 GB/T 7306.1-2000
IP Grade: IP20
Working Voltage: 220VAC 50/60Hz
Power: 6W
Speed: 4r/min
Actuating Time: Full Open: ≤ 18 s
Full Close: ≤ 58s
Control Characteristic: On / off Control

Valve Body: Brass
Valve Stem: Nickel Plated Brass
Valve Disc: NBR
Actuator Shell: Aluminum