| 摘要 |
In order to prevent deterioration of sliding performance of a piston and center core misalignment of the piston when the piston moves for its stroke, there is provided an air bypass valve 10 including: a coil casing 12 in which a coil 25 is accommodated; a pilot valve section 13 covered by the coil casing 12 and having a movable iron core 27 inserted in the coil 25; and a piston section 14 fitted in the coil casing 12 and having a piston 16 with a hole 35. The air bypass valve 10 further includes a protrusion provided at an edge of an opening portion of the piston casing 15 which constitutes the piston section 14. |
