| 摘要 |
<p>The valve assembly of the invention comprises a one-piece body (10) having in its interior a single main axial cylindrical cavity (11) of rectilinear axis, communicating via an outer mouth with at least one outer face (10a) of the one-piece body (10), and first channels (13, 14, 14', 15) communicating with said main cavity (11) and connected to the delivery side (13) of a liquid pressurizing pump, to the discharge, and to at least one user take-off (16) respectively; inserted into the one-piece body (10), a cylindrical cartridge (20) having an axial second cavity (21) coaxial with the main cavity (11), which cartridge engages the surface of the main cavity (11) and is arranged to create, between its own cylindrical outer surface and the surface of the main cavity (11), passages providing communication between said first channels (13, 14, 14', 15); valve elements (E1-E4), inserted into the second cavity (21) and arranged to define, in combination with this latter, at least two or more valves with different functions, chosen from the following: non-return valve (V1), flow regulator valve (V2), discharge valve (V3) and maximum pressure valve (V4) <IMAGE></p> |
