| 摘要 |
PURPOSE: To prevent the generation of the dying out of flame of a gas range or condensate by preventing outside air from being sent out of a bend cap for a duct into a space on the ceiling. CONSTITUTION: A shutter 24, opening and closing an air passage 22, is provided at the fore part of the air passage 22 formed in a main body. The shutter 24 is provided so that it keeps closed at all times and when a predetermined exhaust pressure is acted in the air passage 22, the shutter 24 may be opened by the exhaust pressure. |
