| 摘要 |
<p>PURPOSE:To prevent the shift of the position of a control valve on user side by sealing the air chamber of a control valve with a plug having a small diameter draft hole. CONSTITUTION:In the negative pressure control apparatus in deceleration, a control valve 6 protrudes, and a plug 21 equipped with a draft hole is pushed into and fixed in the opening part of the air chamber 8 divided with a diaphragm 7. The plug 21 is fixed after the screwing position of the control valve 6 is adjusted on manufacturer side. Thus, easy dismantling on user side is prevented.</p> |
