| 摘要 |
<p>The invention provides a fluid delivery system (10) for a fire-fighting apparatus (100) comprising: first pump means (1) for connection to a first liquid supply for pumping a first liquid to a discharge outlet; and second pump means (2) for connection to a second liquid supply for pumping a second liquid to the discharge outlet. The fluid delivery system (10) is adapted to combine the first and second liquids downstream of said first and second pump means to produce a fire-extinguishing agent which, upon exiting the discharge outlet, is a mixture of said first and second liquids. Each of the first and second pump means (1, 2) is typically a positive displacement pump, preferably a membrane pump. A common drive means (3) is advantageously provided for driving both the first pump means (1) and the second pump means (2) simultaneously. The drive means includes a rotary drive shaft and both the first and second pump means are driven by that rotary drive shaft.</p> |
