Description
Overview
The Siemens Building Technology 277-03170 is a fully assembled, 2-way normally open control valve engineered for precise hydronic and HVAC flow regulation in commercial building automation systems. Featuring a robust bronze body with brass trim, this assembly pairs a 2-inch NPT valve with an 8-inch pneumatic actuator for reliable, field-ready installation.
Valve Features
- 2-Way, Normally Open (N.O.) configuration
- 2-inch NPT end connections for straightforward pipe integration
- 40 Cv flow coefficient for high-capacity flow control
- Equal percentage flow characteristic for precise, stable modulation across the full range
- Bronze body construction for corrosion resistance and long service life
- Brass trim for durability and compatibility with hydronic media
Pneumatic Actuator Specifications
- 8-inch pneumatic actuator for positive, responsive valve positioning
- 5 PSI spring span for consistent return-to-normal-open fail-safe operation
- Adjustable spring range to accommodate varying pneumatic control signal requirements
- Designed for integration with standard pneumatic building automation control systems
Applications
- Commercial HVAC hydronic heating and cooling systems
- Building automation and pneumatic control systems
- Air handling units, fan coil units, and heat exchangers
- Chilled water and hot water distribution systems
Why Choose Siemens 277-03170
The 277-03170 ships as a complete valve and actuator assembly, reducing installation time and ensuring factory-matched performance. The equal percentage flow characteristic provides superior control at partial loads — ideal for variable-flow hydronic systems. The adjustable spring range adds flexibility for commissioning across diverse pneumatic system pressures.
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