Siemens 274-03080 Two-Way Normally Closed Valve Assembly
The Siemens 274-03080 is a fully integrated valve and actuator assembly engineered for precise flow control in commercial HVAC and building automation applications. Combining a robust bronze-body globe valve with a spring return modulating actuator, this assembly delivers reliable, fail-safe performance in hydronic heating and cooling systems.
Valve Specifications
- Configuration: 2-Way, Normally Closed
- Pipe Size: 2″ NPT
- Flow Coefficient: 40 Cv
- Flow Characteristic: Linear
- Body Material: Bronze
- Trim Material: Stainless Steel
Actuator Specifications
- Actuator Type: Spring Return Modulating
- Supply Voltage: 24 Vac
- Control Signal: 0–10 Vdc and 4–20 mA
- Fail-Safe Action: Spring return to normally closed position on power loss
Key Features & Benefits
- Pre-assembled valve and actuator for simplified installation and reduced commissioning time
- Normally closed fail-safe design protects systems during power interruptions
- Dual control input (0–10 Vdc / 4–20 mA) ensures compatibility with a wide range of BAS and DDC controllers
- Bronze body construction offers excellent corrosion resistance for hydronic water service
- Stainless steel trim provides long-term durability and tight shutoff
- Linear flow characteristic enables accurate, proportional flow modulation
- Spring return actuator ensures automatic fail-safe closure without auxiliary power
Typical Applications
- Chilled water and hot water coil control in air handling units
- Fan coil unit and terminal unit flow regulation
- Building automation and DDC system integration
- Commercial HVAC hydronic piping systems
