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Ravenscroft specialises in providing innovative and energy efficient engineering solutions for the heating and ventilating sector. Our customised engineering solutions yield high quality indoor air while reducing HVAC operating costs.  


supply valve halton ravenscroft ulaRavenscroft provides Halton ULA supply air and exhaust valves for  ceiling and wall installation with adjustable pressure loss.

ULAs can be installed without an installation frame directly into ductwork or a hollow-core slab. 

In supply air application the desired flow pattern is directed using an internal sector plate. The desired pressure loss and airflow rate can be adjusted in an exhaust air application, by removing the sector plate and adjusting the front panel position.