| 摘要 |
<p>Provided is a bleeder plug which can be produced without a cutting operation in a production process, wherein problems in bleeding air, caused due to adhesion, do not occur. A bleeder plug 10 is provided with a bleeder body 30 having a nipple portion 12 and a threaded portion 20 and being provided with a through hole 24 extending from the nipple portion 12-side end to the threaded portion 20-side end; a seat pin 40 having a press fitting portion 44 to be press-fitted in the threaded portion 20-side opening of the through hole 24 in the bleeder body 30 and a seat portion 42 blocking a bleeder hole, and a groove (comprised of a first groove 46 and a second groove 48) that is provided in an contact surface between the bleeder body 30 and the seat pin 40 and which communicates the nipple portion 12-side opening of the through hole 24 with an outside space via the contact surface.</p> |
