| 摘要 |
PURPOSE:To eliminate an effect due to torsion without generation of torsion in a rubber sleeve. CONSTITUTION:In a constant speed exhaust valve provided with a pressing member 4 where exhaust is carried out through a slit 31 formed in a rubber sleeve 3 capable of being elastically deformed under exhaust pressure and an opening degree of the slit 31 is adjusted by pressing the rubber sleeve 3, a rotation sliding member 6 is interposed between the pressing member 4 and the rubber sleeve 3. |
