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The "Coventry Climax trailer pump" was described as being capable of delivering 250–300 imperial gallons per minute (1,100–1,400 L/min). "A complete, self-contained unit, with a powerful petrol-driven engine, it is towed behind a lorry and will be on patrol through the streets in the event of an air raid". [8]
where: [2] Q f = total residual flow during the test (gallons per minute); c = discharge coefficient (unitless). This is usually 1.0 if using a diffuser. If using a wand to measure the stagnation pressure, the coefficient value depends on the shape of the flow hydrant orifice.
For liquids, various units are used depending upon the application and industry, but might include gallons (U.S. or imperial) per minute, liters per second, liters per m 2 per hour, bushels per minute or, when describing river flows, cumecs (cubic meters per second) or acre-feet per day.
In addition to hoses, ladders and other fire and rescue equipment, the P-19R carries 1000 gallons of water, 130 gallons of foam agent, and 500 lb of Halotron auxiliary firefighting agent. The roof and bumper turrets combined, will discharge up to 750 gallons of water per minute, and at up to 1000 ft from a fire. [10]
K-Factors have also previously been calculated and published using the United States customary units of pound per square inch (psi) and gallon per minute (gpm). Within the United States, US measurements are still often used instead of metric. [3] [4]
With C v = 1.0 and 200 psia inlet pressure, the flow is 100 standard cubic feet per minute (scfm). The flow is proportional to the absolute inlet pressure, so the flow in scfm would equal the C v flow coefficient if the inlet pressure were reduced to 2 psia and the outlet were connected to a vacuum with less than 1 psi absolute pressure (1.0 ...
The vehicle has a small 50 US gallons (190 L; 42 imp gal) water tank and can pump 10 US gallons per minute (0.63 litres per second; 8.3 imperial gallons per minute) at a pressure of 100 pounds per square inch (690 kPa). [5] It is a multipurpose unit used for patrol, mop up, or initial attack.
Gallons per minute, a unit of volumetric flow rate; Gallons per mile, a unit of fuel efficiency; Gaurela-Pendra-Marwahi district, Chhattisgarh, India; General Purpose Macrogenerator, an early macro processor; Global Marshall Plan, specific ideas on how to save the global environment