Description
The Siemens Building Technology 257-02036 is a complete valve and actuator assembly engineered for precise flow control in commercial HVAC hydronic and pneumatic control systems. Featuring a 2-way, normally open configuration with an equal percentage flow characteristic, this assembly delivers accurate, repeatable modulation across a wide range of system conditions.
Valve Body
- 2-way, normally open (N/O) configuration
- 1/2″ NPT end connections
- 1.6 Cv flow coefficient with equal percentage flow characteristic
- Forged brass body construction for durability and corrosion resistance
- Brass trim for long service life and reliable sealing
Pneumatic Actuator
- 3–8 PSI spring range for direct integration with standard pneumatic control systems
- Factory-mounted and calibrated actuator for simplified installation
- Designed for use with pneumatic branch line signals typical of building automation environments
Key Features & Benefits
- Equal percentage flow characteristic provides stable control across varying load conditions
- Normally open fail-safe position protects system on loss of pneumatic signal
- Forged brass body withstands the demands of commercial hydronic applications
- Complete valve-and-actuator assembly reduces installation time and ensures proper component matching
- Ideal for chilled water, hot water, and other compatible hydronic control applications
Specifications
- SKU: 257-02036
- Brand: Siemens Building Technology
- Valve Action: 2-Way, Normally Open
- Connection Size: 1/2″ NPT
- Flow Coefficient (Cv): 1.6
- Flow Characteristic: Equal Percentage
- Body Material: Forged Brass
- Trim Material: Brass
- Actuator Type: Pneumatic
- Spring Range: 3–8 PSI
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