The present invention is directed to a valve that has an orifice closing member adjacent to an orifice through which fluid can flow, a displacement member having a first portion and a second portion, where the first portion is adjacent to the orifice closing member when the valve is in an open position, a first magnet and a second magnet where the first and second magnets are sufficiently proximate to the displacement member to exert a magnetic force on the displacement member, and an actuator for generating a magnetic field to move the displacement member toward the first magnet, cause the first portion to press against the orifice closing member, and cause the orifice closing member to close the orifice.流体が流れるオリフィスの近傍に位置するオリフィス閉鎖部材と、弁が開放位置にあるときにオリフィス閉鎖部材の近傍に位置する第１の部分と第２の部分とを備える変位部材と、変位部材のきわめて近傍に位置して変位部材に磁力を作用する第１磁石と第２磁石と、変位部材を第１磁石の方向に移動させるために磁界を発生して第１の部分をオリフィス閉鎖部材に対して押圧させてオリフィス閉鎖部材によってオリフィスを閉鎖させるアクチュエータ、とを有する弁。【選択図】 図１
