Siemens Building Technology 240-00234 1/2" NPT 120V 3-Wire Normally Closed Control Valve CV 4.0

The Siemens Building Technology 240-00234 is a 1/2-inch NPT threaded control valve designed for HVAC and building automation applications requiring precise fluid flow control. This electrically actuated valve features a 120V power supply with 3-wire configuration for reliable operation in commercial building systems.

Key Specifications:

• Valve flow coefficient (Cv) of 4.0 for accurate flow rate calculations
• 1/2-inch NPT threaded connections for standard pipe compatibility
• 120V AC power supply with 3-wire control configuration
• Fail-safe spring return design (normally closed position on power failure)
• Floating control operation for proportional modulating control
• Suitable for chilled water, hot water, and hydronic heating/cooling systems

This control valve is ideal for VAV systems, fan coil units, and zone control applications where precise flow modulation is required. The floating control design allows for smooth proportional operation when paired with compatible Siemens or third-party building automation controllers.