Belimo Z2100Q-K+CQB24-3 Zone Valve Assembly Overview
The Belimo Z2100Q-K+CQB24-3 is a factory-matched, pre-assembled zone valve combination designed for reliable on/off flow control in hydronic heating and cooling systems. This assembly pairs the Z2100Q-K characterized ball valve body with the CQB24-3 non-spring-return (NSR) actuator, delivering a compact, ready-to-install solution for commercial and residential hydronic zoning applications.
Valve Body — Z2100Q-K
- 1-inch pipe size, 2-way configuration
- Characterized control ball valve (CCBV) design for accurate flow regulation
- Union connections (K suffix) for easy installation and serviceability
- Brass body construction for durability and corrosion resistance
- Suitable for hot water heating and chilled water cooling applications
Actuator — CQB24-3
- Non-spring-return (NSR) operation — valve holds last position on power loss
- 24V AC/DC power supply
- 2-position (on/off) control signal
- Compact, direct-coupled design — no crank arm or linkage required
- Manual override function for commissioning and maintenance
- Visual position indicator for quick status verification in the field
Key Features & Benefits
- Factory-matched valve and actuator combination ensures compatibility and simplifies ordering
- Non-spring-return design reduces mechanical wear for extended service life
- Direct-coupled actuator eliminates linkage failures and reduces installation time
- 24V operation compatible with standard zone control panels and thermostats
- Ideal for hydronic zone control, fan coil units, and terminal unit applications
- Union end connections allow valve removal without disturbing piping
Typical Applications
- Hydronic heating and cooling zone control
- Fan coil unit (FCU) water flow control
- Terminal unit and air handler coil control
- Commercial and light commercial HVAC systems
