Description
The Siemens Building Technology 257-02033 is a complete 2-way, normally open valve assembly engineered for reliable flow control in commercial HVAC and building automation systems. Combining a precision-machined forged brass valve body with a factory-matched pneumatic actuator, this assembly delivers consistent performance and easy field installation.
Valve Body Features
- 2-way, normally open (N/O) configuration for fail-safe operation
- 1/2″ NPT x union male end connections for straightforward piping integration
- 0.63 Cv flow coefficient with equal percentage flow characteristic for precise modulating control
- Forged brass body construction for durability and corrosion resistance
- Brass trim for long service life in hydronic and water applications
Pneumatic Actuator Specifications
- 3–8 PSI spring range for direct integration with standard pneumatic control systems
- Factory-assembled and matched to the valve body for optimized performance
- Normally open design ensures the valve opens upon loss of air signal, providing a safe default state
Applications
- Commercial HVAC hydronic heating and cooling systems
- Building automation and pneumatic control circuits
- Fan coil units, air handling units, and terminal unit flow control
- Systems requiring modulating, equal percentage flow characteristics
Why Choose the Siemens 257-02033?
Siemens Building Technology products are trusted across commercial and industrial HVAC applications for their precision engineering and long-term reliability. The 257-02033 ships as a complete, ready-to-install valve and actuator assembly, reducing installation time and ensuring compatibility between components right out of the box.
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