| 摘要 |
<p>A water hammering prevention device including an outer box defining a flow path having an inlet, an outlet and a drain port in a midstream section thereof. An inner tube member has a diaphragm on its periphery dividing the inside of the outer box into an upstream section, and an area consisting of a midstream section and a downstream section of the flow path. A relief valve is provided and is caple of moving toward or away from a valve seat located on the periphery of a valve port provided between the midstream section and the downstream section. A check valve is provided inside the inner tube member to prevent fluid from flowing backward from the downstream side, and to discharge pressurized fluid generated by water hammering to the outside via the drain port.</p> |
