It is therefore an object of the present invention to provide a variable load valve device for modulating brake pressure, the amount of pressure modulation being predicted on both the intensity of the brake application and the effective vehicle load.

A CDTS flapper valve for a toilet tank having an inlet and outlet with a top opening, and the flapper valve comprising: a chamber/tank; an odour blocking flap stabilized by a valve body and is being pivotally anchored to the base of the chamber/tank; a pneumatic actuator cylinder operably connected with the odour...