Description
The Siemens Building Technology 257-02068B is a factory-assembled 3-way mixing valve and pneumatic actuator combination engineered for reliable hydronic flow control in commercial HVAC and building automation systems. The complete assembly pairs a precision-machined valve body with a direct-mount pneumatic actuator, eliminating field assembly and reducing installation time.
Valve Body
- Configuration: 3-way mixing
- Connection size: 1/2″ NPT
- Flow coefficient: 2.5 Cv
- Flow characteristic: Linear
- Body material: Forged brass
- Trim material: Brass
Pneumatic Actuator
- Actuator type: Pneumatic (spring-return)
- Spring range: 3–8 PSI
- Direct-mount design for compact installation
Key Features & Benefits
- Pre-assembled valve and actuator for simplified installation
- Forged brass body and brass trim provide long-term durability and corrosion resistance
- Linear flow characteristic ensures precise, proportional flow control
- 3-8 PSI spring range compatible with standard pneumatic control systems
- 3-way mixing configuration ideal for blending hot and cold water streams in hydronic systems
- 1/2″ NPT connections for easy integration into existing piping
- Suitable for commercial HVAC, building automation, and hydronic heating/cooling applications
Specifications Summary
- SKU: 257-02068B
- Brand: Siemens Building Technology
- Valve Type: 3-Way Mixing
- Connection: 1/2″ NPT
- Cv Rating: 2.5
- Flow Characteristic: Linear
- Body Material: Forged Brass
- Trim Material: Brass
- Actuator Type: Pneumatic
- Spring Range: 3–8 PSI
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