Importance

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Abstract

This hydraulic valve (1) comprises a valve body (2), an inlet mouth (3) of flow into the valve body (2), provided with a substantially non-deformable two-dimensional section, and a selective passage port (4) of flow in the valve body (2) having a linear section widenable under the flow pressure. The valve body (2) is formed with two sheets (21, 22) made of deformable material, adjacent to each other at the selective passage port (4), sealed together at their respective external edges (23, 24) extended from the inlet mouth (3) to the selective passage port (4) and sealed together around the inlet mouth (3). The structure with the two adjacent sheets (21, 22) guarantees an ideal closure of the selective passage port (4) when the delivery pressure is lower than a preset value, in that the selective passage port is formed with an intrinsically linear shape.

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First Claim