| 摘要 |
<p>A pump assembly for a pressurized water system includes a pressure sensitive switch (27) arranged to monitor the water pressure in a pipe (14) extending between a water delivery pump (13) and a tap (15), the switch (27) controlling operation of the pump (13) dependent upon pressure in the pipe (14). A timer switch (30) is disposed in series with the pressure sensitive switch (27), to inhibit pump operation other than for a limited period of time following triggering of the timer switch (30).</p> |
