Description
The Siemens Building Technology 656-0004 is a 1/2″ flare-connection, normally open (N/O) control valve with a 0.9 Cv flow coefficient, paired with a pneumatic actuator rated for a 3–6 lb spring range. Engineered for precision flow control in building automation and HVAC systems, this valve delivers reliable modulating performance in refrigerant and hydronic piping applications where pneumatic control signals are used.
Key Features
- 1/2″ flare connection for secure, leak-resistant installation in refrigerant or fluid piping
- Normally Open (N/O) fail-safe configuration — valve opens on loss of control signal
- 0.9 Cv flow coefficient for precise, low-flow modulation
- Pneumatic actuator with 3–6 lb spring range for accurate positioning
- Designed for integration with building automation systems (BAS)
- Siemens Building Technology quality construction for long service life
Specifications
- SKU: 656-0004
- Brand: Siemens Building Technology
- Connection Type: 1/2″ Flare
- Valve Action: Normally Open (N/O)
- Flow Coefficient (Cv): 0.9
- Actuator Type: Pneumatic
- Spring Range: 3–6 lb
Applications
- Commercial HVAC building automation systems
- Pneumatically controlled refrigerant or chilled water circuits
- Modulating flow control in fan coil units and air handling units
- Retrofit and replacement in existing Siemens pneumatic control systems
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