Description
Belimo B2050QPWN+CQKB24RR Overview
The Belimo B2050QPWN+CQKB24RR is a factory-assembled zone valve combination pairing the B2050QPWN 1/2″ 2-way characterized control valve body with the CQKB24RR spring-return ON/OFF actuator. Engineered for precision flow control in hydronic heating and cooling applications, this combination delivers reliable shutoff and repeatable performance in commercial and residential HVAC systems.
Valve Body — B2050QPWN
- Pipe size: 1/2″ NPT
- Configuration: 2-way (normally closed)
- Flow coefficient (Cv): 3.2
- Body material: Brass
- End connections: NPT threaded
- Characterized ball valve design for precise flow control
- Suitable for chilled water, hot water, and glycol solutions
Actuator — CQKB24RR
- Control signal: ON/OFF
- Supply voltage: 24V AC/DC
- Fail-safe action: Spring-return (SR)
- Compact, direct-coupled design — no couplings or linkages required
- Manual override for commissioning and servicing
- Auxiliary switch included for end-position feedback
Key Features & Benefits
- Factory-assembled combination ensures correct valve-actuator pairing
- Spring-return fail-safe closes valve on power loss — ideal for safety-critical applications
- ON/OFF control simplifies wiring and integration with zone controllers and thermostats
- Compact form factor fits tight mechanical spaces
- Belimo’s proven characterized ball valve technology delivers tight shutoff and long service life
- Suitable for fan coil units, air handling units, and terminal unit hydronic circuits
Typical Applications
- Hydronic heating and cooling zone control
- Fan coil unit (FCU) water flow control
- Air handling unit (AHU) coil control
- Building automation and energy management systems
- Commercial and light industrial HVAC installations
