Unit for Regulating or Controlling a Fluid Pressure

Abstract

The invention concerns a unit (10) for regulating or controlling a fluid pressure, with at least one housing part (13, 14) and a switching film (22) connected with the at least one housing part (13, 14) for switching at pressure differences of 1 to 250 mbar, preferably of 1 to 100 mbar, relative to an ambient pressure acting on the switching film (22) and for regulating, releasing or blocking a flow of the fluid between an inlet (28) and an outlet (30) for the fluid. The switching film (22) is formed of thermoplastic synthetic material. In this context, an opening cross section (40) of the at least one housing part (13, 14) is closed off by the switching film (22). The invention concerns moreover a method for fluid-tight connection of a switching film (22) with at least one housing part (13, 14) of a unit (10), wherein a radial outwardly positioned joining region (42) of the switching film (22) in the region of at least one joining surface (50, 52) is fluid-tightly pressed against the at least one housing part (13, 14).

Dependencies are inferred from the claim text.