| 摘要 |
<p>A hand-held vacuum pump (10) with an attached vacuum limiter valve (60) is disclosed. The pump includes a cylinder (14) coupled with a handle (11), a piston (31) in the cylinder coupled with another handle (12), along with a suitable valving assembly for allowing a vacuum to be drawn at an inlet of the pump. More particularly, there is also disclosed a vacuum limiter (40) which can be attached to or form an integral part of the pump. The vacuum limiter includes a valve which is attached to the cylinder outlet port and which is adjustable for allowing the limit vacuum to be set.</p> |
