Patent ID: 9695954
Date: 2017-07-04
CPC Classifications: F16K,Y10T

Claim:
1. An electric valve device, comprising: a hollow body with an inlet and an outlet for a flow of a liquid, between which, inside said body, there is defined a chamber in which there is provided a valve seat cooperating with an associated closing member so as to control communication between the inlet and the outlet; and a tubular guiding formation which is nominally coaxial with the valve seat and inside which there is mounted, axially displaceably to and from the valve seat, a core which carries the closing member and the position of which with respect to the valve seat can be electromagnetically controlled by a winding or solenoid arranged around said tubular guiding formation, wherein said body and said tubular guiding formation are made as a single piece of moulded plastic, wherein said tubular guiding formation, has a distal end whose terminal portion farthest from the valve seat is closed in a fluid-tight manner by an associated closing member, and said winding or solenoid is surrounded at least in part by an associated magnetic flux conducting member, forming therewith an assembly provided with a through-opening inside which said tubular guiding formation extends, and is axially locked on said body by said closing member, wherein the distal end of said tubular guiding formation extends through the whole assembly formed of the winding or solenoid and said magnetic-flux conducting member and protrudes outside said assembly opposite the valve seat, and the associated closing member comprises a plug or cover made of non-magnetic material coupled directly to the terminal portion of said tubular guiding formation which protrudes outside said assembly, wherein the outlet for the liquid is provided in the body on the opposite side to said tubular guiding formation relative to the valve seat and is coaxial with said tubular guiding formation and the valve seat, wherein the valve seat is made as a single piece of molded plastic with said body and said tubular guiding formation, and wherein said plug or cover abuts directly against said magnetic-flux conducting member.