Description
Siemens Building Technology 656-0012 Pneumatic Valve Overview
The Siemens Building Technology 656-0012 is a 1/2″ normally closed (NC) pneumatic control valve engineered for reliable fluid regulation in commercial HVAC and building automation systems. With a 2.1 Cv flow coefficient and a 10–15 lb spring range, this valve delivers precise, responsive control of hot water, chilled water, or steam circuits in a wide range of hydronic and air-handling applications.
Key Features
- 1/2″ body size for compact installation in tight mechanical spaces
- Flared connection type for secure, leak-resistant piping interface
- 2.1 Cv flow coefficient for accurate flow capacity matching
- 10–15 lb (psi) spring range for precise pneumatic actuation response
- Normally Closed (NC) fail-safe configuration — valve closes on loss of air signal
- Designed for use with compatible Siemens pneumatic actuators in building automation systems
- Suitable for hot water, chilled water, and compatible hydronic media
Application
The 656-0012 is ideal for commercial and industrial HVAC installations where pneumatic control systems govern heating and cooling coil circuits, fan coil units, and air handling unit (AHU) valve assemblies. The normally closed design provides inherent fail-safe protection, shutting off flow automatically in the event of air supply loss — a critical safety feature in occupied building environments.
Why Choose Siemens Building Technology
Siemens Building Technology is a globally recognized leader in building automation, HVAC controls, and energy management solutions. Their pneumatic valve product line is engineered to meet the demanding performance standards of commercial facilities, offering long service life, consistent actuation, and seamless integration with Siemens building management systems (BMS).
Specifications
- SKU: 656-0012
- Brand: Siemens Building Technology
- Body Size: 1/2″
- Connection Type: Flared
- Flow Coefficient (Cv): 2.1
- Spring Range: 10–15 lb
- Actuator Action: Normally Closed (NC)
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