VALVE

摘要

A valve 100 comprising a magnetic circuit comprising a first member 101 and a pivotably mounted armature 102 the armature being movable between a position in which the valve seal 104 engages the valve seat 105 of valve port 103 to block the valve port 103 , and a position away from the first member 101 . A coil 106 surrounds the armature 102 which, when supplied with an electric current, creates a magnetic field in the armature 102 attracting the free end to the first member 101 . Dampening pads 110 are provided on the armature 102 . Each dampener pad 110 comprises a layer of viscoelastic material covered by a protective layer of polyetheretherketone (PEEK). During use, as there is wear between the armature 102 and the first member 101 , and/or non magnetic section 107 , the dampening pad 110 is compressed on impact by an increasing degree, thus the more worn the valve becomes, the more the dampening and thus the greater the protection against further wear.