| 摘要 |
FIELD: ventilation.SUBSTANCE: present invention relates to device for exhaust ventilation pipe. Exhaust ventilation pipe includes exhaust pipe (1) vent channel equipped with head (2) and passing through external building roof, upper part of head (2) comprises conical cap (3) to prevent passage of rain water into vent channel. Present invention is characterised by that on upper part of conical Cap (3) of head (2) there is round alcohol level (6).EFFECT: easier mounting of tube in vertical position.1 cl, 3 dwg |
