Description
Overview
The Siemens 257-02046 is a complete valve and actuator assembly engineered for reliable flow control in commercial HVAC and building automation systems. This 2-way, normally open configuration ensures safe fail-open operation, making it well suited for heating and cooling coil applications where uninterrupted flow is required on loss of signal or air supply.
Valve Features
- 2-way, normally open (N/O) configuration
- 1″ NPT end connections for straightforward installation
- Flow coefficient (Cv) of 10 for precise flow capacity matching
- Equal percentage flow characteristic for stable, linear control across the full operating range
- Forged brass body construction for durability and corrosion resistance
- Brass trim for compatibility with hydronic and chilled water systems
Pneumatic Actuator Features
- 3–8 PSI spring range for direct compatibility with standard pneumatic control systems
- Pneumatic actuation provides smooth, reliable modulating control
- Designed for integration with Siemens Building Technology pneumatic control networks
Typical Applications
- Heating and cooling coil control in air handling units (AHUs)
- Fan coil unit (FCU) water flow regulation
- Commercial building automation and HVAC control systems
- Pneumatically controlled hydronic systems
Why Choose Siemens 257-02046
Siemens Building Technology products are trusted across commercial and industrial HVAC applications for their precision engineering and long service life. The 257-02046 combines a robust forged brass valve body with a factory-matched pneumatic actuator, simplifying installation and ensuring optimized performance right out of the box. The equal percentage flow characteristic delivers consistent, controllable modulation from low to full flow, reducing energy waste and improving system efficiency.
Reviews
There are no reviews yet.