Siemens Building Technology 256-02012 2-Way Normally Closed Valve Assembly 3/4 Inch 6.3 Cv

The Siemens Building Technology 256-02012 is a 2-way normally closed (NC) pneumatic valve assembly designed for precise control in commercial HVAC systems. This equal percentage valve features 3/4-inch female-by-female threaded connections for straightforward installation into existing piping systems.

Key Specifications:

• Valve Configuration: 2-way normally closed (NC)
• Port Size: 3/4 inch FxF (female threaded both ends)
• Flow Coefficient (Cv): 6.3
• Actuator Spring Range: 10-15 PSI
• Actuator Type: Pneumatic spring return (SR)
• Actuator Size: 2-inch top mount
• Trim Material: Brass
• Characteristic: Equal percentage

The equal percentage flow characteristic provides excellent control at partial loads, making this valve ideal for heating and cooling coil applications. The spring return actuator automatically returns the valve to the closed position upon loss of air pressure, providing fail-safe operation. The compact 2-inch actuator design minimizes installation space requirements while delivering reliable performance in commercial building automation systems.