| 摘要 |
PURPOSE:To prevent generation of flowing water noise due to half opening condition of a main valve by making a spring force of a spring provided on a connecting rod connected to a first float arm larger than a spring force of a spring provided between a pilot valve and a second float arm. CONSTITUTION:When the water level is fallen from the dead water face A to the liquid level (a), a first float arm 27 is moved to the counter clockwise direction. This time, a first spring 34 whose spring force is stronger than that of a second spring 43 is compressed between spring guides 33, 33, then a second float arm 36 is also rotated to the counter clockwise direction and moved by a degree of left side play (a1) of a long hole 38 to be contacted to a connecting shaft 40. Even if the liquid level is fallen more from (a) to (b), a second float arm 36 does not move. But when the liquid level is fallen more from (b) to (B), the second float arm 36 is rotated to the counter clockwise direction with a supporting shaft 36 as a fulcrum to release a pilot valve 25. |
