Patent attributes
A quick-fit coupling (1) for pressurized fluid, comprising a hollow longitudinal valve body (3) having at least a first valve body part (4) and a second valve body part (5) that is coaxially movable with respect to the first valve body part (4), a shutter stem (6) positioned in the valve body (3) coaxially to the longitudinal axis (L) of the valve body (3), a longitudinal hollow body (7) for containing the valve body (3), disposed coaxially to the valve body (3) and defining, with the valve body (3), a hollow space (8), a drive sleeve (9) for driving the second part (5) of the valve body (3) and disposed in the hollow space (8), the second valve body part (5) being movable with respect to first valve body part (4) in contrast and by action of a first helical spring (10) positioned in the hollow space (8), the sleeve (9) being movable with respect to the valve body (3) in contrast and by action of a second helical spring (13) positioned in the hollow space (8), at least one helical spring (10, 13) having coils with a cross section elongated in shape in the direction parallel to the axis of the helical spring.
