Description
Belimo B209B+TR24-SR 2-Way Valve & Actuator Assembly Overview
The Belimo B209B+TR24-SR is a factory-matched, 2-way characterized control valve (CCv) assembly combining a brass-trimmed valve body with a TR24-SR non-spring-return actuator. Designed for precise flow control in hydronic heating and cooling systems, this pre-assembled combination delivers reliable modulating performance in commercial HVAC applications.
Valve Specifications
- Configuration: 2-Way (CCv — Characterized Control Valve)
- Body/Trim Material: Brass
- Connection Type: 1/2″ NPT
- Flow Coefficient: Cv 0.8
- Design: Equal percentage flow characteristic for precise modulation
Actuator Specifications
- Model: TR24-SR (Non-Spring-Return)
- Torque Rating: 18 in-lb
- Control Signal: 2–10 Vdc (proportional/modulating)
- Supply Voltage: 24 Vac / 24 Vdc
- Return Type: Non-Spring-Return (NSR) — maintains last position on power loss
Key Features & Benefits
- Factory-assembled valve and actuator combination — ready to install out of the box
- Characterized control valve (CCv) design ensures linear flow control across the full stroke
- Non-spring-return actuator holds last valve position upon power interruption
- 2–10 Vdc proportional control signal compatible with most DDC and BAS controllers
- Dual-voltage compatibility: 24 Vac or 24 Vdc power supply
- Compact brass construction suited for tight mechanical spaces
- Ideal for fan coil units, air handling units, and hydronic terminal applications
Typical Applications
- Fan coil unit heating and cooling coil control
- Air handling unit hydronic coil modulation
- Building automation and DDC system integration
- Commercial hydronic HVAC systems
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