| 摘要 |
The tubing blower prevents back sucking of water into water installation and has a base (34) provided with one tubing blower entrance (60) and a tubing blower exit (62). An axially adjustable closing body (64), which has an upper sealing surface (80) and lower sealing surface (78), which in close position, restricts the flow to ventilation channel. An independent claim is also included for stop valve. |
