Abstract: The invention relates to an inflation or deflation valve 1 to at least a predefined pressure intended to adjust and/or control the pressure of a fluid inside a volume 10, comprising a membrane 4 placed between a first body 2 and a second body 3 connected together by linking means, said membrane delimiting a first chamber 5 with the first body 2 and a second chamber 6 with the second body 3 and pressing, through the action of a spring 18, on a seat delimited by the lower body.

Abstract: A piloted pneumatic valve for controlling pressure at a distance. The valve includes a cavity divided into two chambers by a membrane. One chamber is the pilot chamber, and the other the escape chamber, connected to a pressurization and depressurization circuit, connected to the controlled pressurized volume through an orifice, and to the outside air through at least one escape hole. The system also includes a piloted valve pressing the membrane against the orifice to close it, and an opening, communicating with the circuit leading to the pressurized volume, and fitted with a check valve poppet prohibiting flow back from the capacity to the circuit. For application to automotive vehicles.