Patent ID: 8118277

Claim:
An intercepting valve for a fluid, comprising: a valve body having a fluid input duct and fluid output duct, suitable for joining to a distribution network of the fluid; an obturator lodged at least partially in the valve body between the input duct and output duct, the obturator being rotatable from a closed position, in which it prevents the transit of the fluid from the input duct to the output duct, to a first open limit position, in which it defines a first opening for the transit of the fluid, the first opening having a first contour for a first characterisation of the fluid; wherein in a further open limit position, the obturator defines a further opening, the opening having a further contour, different from the first, for a further characterisation of the fluid; wherein the obturator passes from the closed position to the first open limit position by turning clockwise and passes from the closed position to the further open limit position by turning anti-clockwise; and wherein the obturator, in the first open limit position strikes against the wall, to prevent further rotation clockwise and, in the further open limit position strikes against the wall to prevent any further rotation anti-clockwise.