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Residential pool pumps were first included in the 2005 Title-20 appliance standards that were adopted at the end of 2005. California has a limited ability to produce electricity. When California electrical demand exceeds its production capacity the utility companies must purchase electricity, usually form out of state companies at a much higher ...
In the United States, NFPA 1901 requires engines to have suction hose that matches the engine's pump rating. [12] For example, an engine with a 1,000-US-gallon (3,800 L) per minute pump is required to carry 5-inch (13 cm) or larger hose, [1]: 181 while a wildland fire engine will typically carry 2-to-2.5-inch (5.1 to 6.4 cm) hard suction hose.
The relationship between gallons per minute (gpm) and fixture unit is not constant, but varies with the number of fixture units. For example, 1000 FU is equivalent to 220 US gallons per minute (0.014 m 3 /s) while 2000 FU represents only 330 US gallons per minute (0.021 m 3 /s), about 1.5 times the flow rate.
Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...
Examples include a showerhead with flow rate of 1.75 gpm (6.61 lpm) at high water pressure and 1.45 gpm (5.48 lpm) at low pressure, or a showerhead with three pressure compensated flow rates (by non-removable pressure compensator) with options of 0.5, 1.0 and 1.5 gpm (1.9, 3.8, 5.7 lpm).
The tops of the fire hydrants indicate available flow in gallons per minute; the color helps make a more accurate choice of what hydrants will be utilized to supply water to the fire scene. [9] Blue: 1,500 US gallons per minute (95 L/s) or more; very good flow; Green: 1,000–1,499 US gallons per minute (63–95 L/s); good for residential areas