Description
The Belimo B309B+TR24-3 is a factory-assembled 3-way valve and actuator combination engineered for reliable on/off flow control in commercial HVAC hydronic systems. The brass-trimmed valve body features a 1/2″ NPT connection and a close-off valve (CCv) configuration, delivering a flow coefficient (Cv) of 0.8 for precise fluid management in smaller piping circuits.
Paired with the TR24-3 non-spring return actuator, this assembly provides 18 in-lb of torque and operates on both 24 Vac and 24 Vdc power supplies, offering installation flexibility across a wide range of control systems. The non-spring return design holds the valve in its last commanded position upon power loss, making it ideal for applications where a defined fail position is not required.
As a pre-matched valve-and-actuator assembly, the B309B+TR24-3 simplifies procurement, reduces installation time, and ensures guaranteed compatibility between components straight out of the box — a hallmark of Belimo’s trusted engineering.
Key Features
- 3-way CCv (close-off valve) configuration for diverting or mixing hydronic flow
- Brass trim valve body with 1/2″ NPT connections
- Flow coefficient (Cv) of 0.8 — ideal for low-flow hydronic applications
- Non-spring return actuator — holds last position on power loss
- 18 in-lb torque output for dependable valve actuation
- On/Off control signal for straightforward integration
- Dual-voltage compatibility: 24 Vac / 24 Vdc
- Factory-matched valve and actuator assembly for guaranteed compatibility
Specifications
- SKU: B309B+TR24-3
- Brand: Belimo
- Valve Type: 3-Way CCv (Close-Off Valve)
- Valve Body Material: Brass Trim
- Connection Size: 1/2″ NPT
- Flow Coefficient (Cv): 0.8
- Actuator Type: Non-Spring Return
- Torque: 18 in-lb
- Control Type: On/Off
- Supply Voltage: 24 Vac / 24 Vdc
Common Applications
- Fan coil unit (FCU) hydronic coil control
- Terminal unit heating and cooling circuits
- Small commercial hydronic distribution systems
- Building automation and DDC control integration
Reviews
There are no reviews yet.