Damper actuator and zone valve displayed at B&L International duct rig

Photo: Mariusz Młynarczyk / CloudAir.tech

In the foreground of the B&L International display, a brass valve with an electric actuator and a round duct damper fitted with a control box sit on the white plinth. Clear acrylic duct sections with disc valves run above, leading into an aluminium flexible duct, with leaflets laid out alongside.