| 摘要 |
PURPOSE:To carry out the test of a valve in a simple way at a low cost, by applying a compound wax in a desired shape on the surface of a passage wall which is fabricated in a large size. CONSTITUTION:Upon manufacturing of a valve body a passage wall 14 is fabricated in a size larger than a designed size. Then, a compound wax 15 is applied on the surface of the passage wall 14 in a desired shape. Thereafter, liquid is made flow through the valve body 1 after the latter is connected between pipes. The flow rate of and differential pressure across the valve body 1, etc. are actually measured to obtain data for determining tha shape of the passage 5 satisfying the specification. In the test of the valve, the shape of the passage 5 in the valve body 1 is easily changed by adjusting the compound wax 15. |
