Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 217
is always primed, while if suction valvesare placed below, any wear on the valves or valve seats,or obstruction under the valves, will cause the water to leakentirely out of the water cylinder, making it necessary toprime the pump before it can be started. Valve seats, bolts and springs should be… … ^fc/^- JMimd Fig. 199. may be changed from composition to rubber by merely re-moving bolt, and substituting one for the other without re-moving the seat. This is of great advantage where a pump isto be used for hot water after being used for cold water. Pump Paris.
Hydraulic machinery · Pumping machinery
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