Description
The Siemens Building Technology 656-0002 is a normally open (N/O) pneumatic valve engineered for reliable flow control in commercial HVAC and building automation applications. Featuring a 1/2-inch flare connection, this valve is designed for straightforward field installation and a secure, leak-resistant seal in refrigerant and fluid piping systems.
Key Features
- Normally Open (N/O) valve configuration — fails open for safe system operation
- 1/2″ flare connection for easy, reliable installation
- Pneumatic control signal range: 3–8 PSI
- Flow coefficient (Cv): 2.1 for precise flow regulation
- Designed for commercial HVAC and building automation systems
- Siemens Building Technology quality construction for long-term durability
Application
The 656-0002 is well suited for use in pneumatically controlled HVAC systems where modulating or two-position flow control is required. The 3–8 PSI operating range is compatible with standard pneumatic control systems, and the 2.1 Cv rating ensures accurate flow management in appropriately sized piping circuits. The normally open design provides a fail-safe condition, maintaining flow in the event of a loss of control signal.
Specifications
- SKU: 656-0002
- Brand: Siemens Building Technology
- Connection Type: 1/2″ Flare
- Valve Action: Normally Open (N/O)
- Control Pressure Range: 3–8 PSI
- Flow Coefficient (Cv): 2.1
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