| 摘要 |
<p>This invention relates to a remote shut-off valve, and in particular to a valve for the remote shutting-off of a fluid such as a mains water supply. According to the invention there is provided a remote shut-off valve comprising a diaphragm valve and a pilot valve (40), the diaphragm valve having an inlet (12), an outlet (14), a valve member (22) and a valve seat (18), the valve member having a closed position in which it engages the seat and blocks the flow of fluid from the inlet to the outlet and an open position in which the valve member does not engage the valve seat and fluid can flow from the inlet to the outlet, a first fluid conduit (30,36,46) connecting the inlet of the diaphragm valve to the inlet of the pilot valve and a second fluid conduit (50,38,32) connecting the outlet of the pilot valve to the outlet of the diaphragm valve, the diaphragm valve having a control chamber (26), and a flow channel (96) connecting the control chamber to the diaphragm valve inlet, characterised in that the flow channel is located within the body (24) of the diaphragm valve. <IMAGE></p> |
