| Chapter 1: | Water Supplies |
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Plate 8. Ram pump.
Source. Author's drawing of ram pump cross section.
The purpose of the air chamber is to dampen the water-hammer shocks, thus preventing them from being transmitted via the delivery pipe and potentially causing unwanted noise in the house. A further effect of the air under pressure is to even out the water flow in the delivery pipe. Since the air in the chamber would eventually be absorbed by the water under pressure, however, the snifter valve is provided to automatically replace a small quantity of air during each cycle. The cycle, as