ROLL COOLANT VALVE FOR ROLLING

摘要

The invention of the present application addresses the problem of providing a normally open roll coolant valve. This roll coolant valve includes: a valve body (1); an end cover (8) fitted into one end of the valve body (1); an annular coil (11) provided along the inside wall of the valve body (1); a stationary core (5) having a form whereby a hollow disc-shaped base part and a hollow annular part extending therefrom are formed integrally, and arranged so as to make contact with the coil (11); a needle (9) that is capable of sliding within the aforementioned hollow annular part and making contact with the rear aperture of a poppet (3) to seal this aperture; a movable core (4) that has the needle (9) and is arranged so as to be capable of sliding on the inner surface of the coil (11); an elastic element (12) provided between the stationary core (5) and the movable core (4); and a circuit for supplying power to the aforementioned coil.