| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a joint for a heat source machine capable of preventing water leakage after finishing an airtightness test. <P>SOLUTION: The joint HD1 (HD2) for the heat source machine is provided with a selection valve 46 by which a heat source machine side connection part 33, terminal end side connection parts 35 and 37 for connecting heat medium flow pipes 20 and 21, and a testing connection part 39 for connecting a test fluid supply pipe 45 communicate with each other. By means of the selection valve 46, a test condition, in which communication between the heat source machine side connection part 33 and the terminal end side connection parts 35 and 37 is blocked, and The testing connection part 39 is provided with a check valve 43 which allows passage of the flow of test fluid fed from the supply pipe 45 and prevents passage of the flow in the opposite direction. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
