Patent ID: 9341269
Filing Date: 2016-05-17
CPC Classification: F16K,F16L,Y10T

Claim Text:
1. A control valve for a connection unit for flexible hoses, comprising a plurality of petals (segments or sectors) rotatable between a position of complete opening and a position of complete closing, wherein said plurality of rotatable petals consist of pairs of petals with different shape and size alternately arranged along the circumference of the connection unit and wherein the petals of smaller size are controlled so as to close more slowly than those of a larger size so as to reach a contact position of respective lateral edges, wherein an upstream surface of the petals of smaller size is provided with a pair of fins laterally protruding from the upstream surface so as to rest on an upstream surface of the petals of larger size to oblige the latter to close before the petals of smaller size, and in that the upstream surface of the petals of larger size is provided with a pair of projections which at the end of the closing movement of the petals are inserted in corresponding recesses of a facing surface of the fins for making a precise and stable coupling of the adjacent petals in a tightly closed position.