Overview
The Belimo Z2100Q-K+CQKB24-SR-RL ZoneTight QCV is a 1-inch, 2-way modulating zone valve assembly designed for precise HVAC flow control. Equipped with an electronic fail-safe actuator, it automatically moves the valve to the open position upon loss of power.
Features
- Electronic fail-safe system ensures open position safety during power outages
- Proportional modulating control via 2…10 V signal for accurate temperature regulation
- Compact design ideal for space-constrained HVAC equipment
- Tool-free actuator mounting enables fast and easy maintenance
Specifications
- Valve Size: 1 inch (DN 25)
- Valve Pattern: 2-way
- Flow Capacity: Cv 8.2
- Power Supply: AC/DC 24 V
- Control Signal: 2…10 V modulating
- Normal State: Normally Closed
- Fail-Safe Position: Open
Applications
- Proportional control in hydronic heating and chilled water systems
- Airflow and temperature modulation in fan coil units, VAV reheat coils, and radiant panels


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