| 摘要 |
<p>A thermal isolation valve 10 for use with a hot water heating system, comprises a valve housing 12 defining a valve chamber 14 and a valve member 16 moveable located within the valve chamber. The valve body 12 comprises a valve body 20, an inlet pipe coupling 22, an outlet pipe coupling 24 and a valve seat 18. The valve member 16, valve body 20 and valve seat 18 are of a low thermal conductive material. The valve 10 allows water flow in a forward flow direction from the inlet coupling 22 to the outlet coupling 24, with the valve member 16 lifting off the valve seat 18 in the process. Water flow in a reverse flow direction, for pressure relief, is permitted by the valve seat being displaced downwardly relative to the valve body 20. The valve member 16 provides a heat transfer barrier between water upstream and downstream of it, whereas the valve body 20 thermally decouples the inlet coupling 22 from the outlet coupling 24 so as to achieve energy savings.</p> |
