Patent ID: 8641010

Claim:
A valve comprising a tube for guiding movement of a plunger, a solenoid which can be arranged about the tube, and a yoke which can be positioned in an operational position relative to the tube and relative to the solenoid so that it provides a magnetic path between the solenoid and portions of the tube, wherein the yoke comprises an elastically deformable structure allowing elastic deformation of the yoke to facilitate engaging between the yoke and the tube and thus to prevent removal of the solenoid and the yoke from the tube, and to enable subsequent release of the yoke from the tube to allow disassembly of the valve from the tube, and wherein the yoke forms a lower leg, an intermediate portion and an upper leg, the lower and upper legs both forming openings being aligned to form a passage for the tube through both openings, wherein the yoke comprises a locking structure arranged such that the locking structure, in the operational position, can enter into a recess in the tube and thereby prevent movement of the tube relative to the yoke, and wherein the locking structure is elastically deformable to enable movement of the locking structure into and out of the engagement with the tube to facilitate release and re-locking of the yoke from the tube, wherein the tube is received in an opening through the yoke, where elastic properties of the yoke provide a variable dimension of the opening and allow, in an expanded state of the opening, insertion of the tube in the opening and, in a less expanded state of the opening, engagement between the edge of the opening and the tube, and wherein the locking structure has the shape of two pawls with free ends pointing towards each other from opposite sides of the opening, where each pawl has a free end pointing inwardly towards the centre of the opening, and where the free end is elastically bendable away from a relaxed configuration so that it can be deformed and provide space for the tube in the opening and so that it can flex back towards the relaxed configuration and into the recess of the tube.