HOSE VALVE Russian patent published in 2007 - IPC F16K7/07 F16K31/365 

FIELD: pipe fittings designed for closing of various pipelines for transportation of liquid or gaseous medium.

SUBSTANCE: hose valve has cylindrical casing comprising hose fixed therein and slide with branch pipes, and is further provided with two turned-out hoses of different sections, said hoses being laid over outer side of fold line, inward thereof. These hoses are oriented to one another on outer surface of valve casing and connected with one another by means of bushing at laying place. Slide is made three-way and three-positional so as to connect by means of branch pipes at first position of valve inlet with cavity of larger-section hose and of smaller-section cavity with cavity between hose and casing, at second position of valve inlet with cavity of smaller-section hose and cavity of larger-section hose with valve outlet, and at third position - of cavity between hose and casing with valve outlet.

EFFECT: increased efficiency in recovering of energy and pressure of transported product for changing-over hose valve without increasing flow resistance to liquid movement.

3 dwg