| 摘要 |
PURPOSE:To prevent an application of force caused by an operation of the valve by a method wherein a second bushing is arranged in a bottom wall of the concave part formed in the main body of the handle, a first bushing with a diameter than the inner diameter of the second bushing is arranged in the concave part, and its lower edge and the open edge of the concave part are integrally fixed to each other. CONSTITUTION:When the handle is rotated, the spindle 4 and the engaging part 5 are engaged to each other to cause a force to be applied between the second bushing (b) and the main body A of the handle, resulting in that no force is applied to the fixing part between the inner and outer projections 10 and 11 and the projections 12 and 13 in the main body A of the handle. Heat from the spindle 4 is transmitted to the main body A of the handle through the second bushing (b), and both the spindle and the second bushing are made of synthetic resin, so that no difference in thermal expansion is found therebetween. |
