overload valve

overload valve

A valve in the flap system that prevents the flaps from being lowered at speeds that may cause structural damage. The valve comes into operation by the excessive air loads on the flap if the pilot tries to lower them at higher than permissible speeds. Also known as a flap-overload valve or a blow-back valve
References in periodicals archive ?
zabezpieczenie jacks against overload or incorrect connection with two integral overload valves on the lift;