Constant Air Valves
The Constant Air Valves category features terminal units designed to guarantee a consistent volume of air flow through the duct system, independent of pressure fluctuations. These units dynamically adjust their internal cross-section to maintain the required flow rate.
The category includes two main operational types:
Passive Mechanical Models: These are purely non-powered devices that use internal pressure-sensitive flaps or diaphragms to automatically modulate flow. They are highly reliable for basic balancing and constant ventilation.
Demand-Controlled Models (Specialized Variations): These variants use sensors to adjust the flow rate based on real-time room conditions, allowing them to vary their cross-section dynamically based on demand:
Humidity-Controlled Function: Valves with integrated humidity sensors mechanically or electromechanically trigger a flow increase when moisture levels are high, providing rapid exhaust and then returning to the base rate.
CO2 or Presence Sensing: The most advanced units react to CO2 levels or occupancy detection. These require a low-voltage electrical connection to power the sensor and the actuator that drives the modulation of the air passage, ensuring ventilation is precisely matched to occupancy or pollution.
CAVs offer a highly reliable and versatile solution for achieving predictable, energy-efficient ventilation, whether used in their simple passive form or as sophisticated demand-controlled terminals.