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42 Cards in this Set
- Front
- Back
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GPM 2 1/2 Nozzle
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250
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GPM 1 1/2 Nozzle
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125
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GPM 1 1/2 NK3`
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60
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GPM 1 Bubble Cup
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Oct-60
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GPM 1 NK2
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20
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GPM Equation
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29.7 X D^2 X SQ RT of NP
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Square Root of 100 PSI
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10
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Square Root of 80 PSI
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9
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Square Root of 50 PSI
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7
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Friction Loss Equation
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C X Q^2/100 X L per 100
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Equation Nozzle Reaction (Fog)
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.505 X GPM
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Equation Nozzle Reaction (Tip)
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1.57 X D^2 X NP
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Volume of a tank
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L X W X H
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Area of a rectangle
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L X W
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Weight one gallon h2o
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8.35
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Exertion of one sq inch H2O 1 foot deep
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0.434
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atmoshperic pressure at sea level
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14.7 PSI
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NP hand held straight tip
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50 PSI
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NP Master Stream Tip
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80 PSI
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NP Fog Combination Nozzle
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100 PSI
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1 Coefficient
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150
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1 1/2 coefficient
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24
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1 3/4 coefficient
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15.5
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2 1/2 coefficient
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2
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4 coefficient
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0.2
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FL forestry tee
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5 PSI
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FL Wye, Siamese
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10 PSI
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FL Manifold
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10 PSI
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Portable Monitors
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15 PSI
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Engine (Relay Pumping)
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20 PSI
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Standpipe
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25 PSI
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Ladder Pipe (Truck one)
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80 psi
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PSI PER FLOOR UP OR DOWN (10 FEET)
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5 PSI
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Wildland Elevation 100'
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43 PSI
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Wildland Elevation 50'
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22 PSI
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Wildland Elevation 25'
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11 PSI
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Coefficient 2 2 1/2's
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0.5
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Coefficient three 2 1/2's
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0.22
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Coefficient One 4 Two 2 1/2's
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0.12
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Primer
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A centrifugal, midship-mounted fire pump on a fire department engine must be primed before it will operate. Primed means fully water flooded and all the air inside the pump casing preferably removed.An operating midship pump filled with water is self- sustaining in that it creates quite a high vacuum at the eye of the impeller. This provides a continuous intake of water when drafting from a static supply source.
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Pressure Relief/ Governor
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The relief valve is designed to keep dangerous pressure surges from injuring firefighters on hoselines. The system consists of two components: the pilot valve, which is mounted to the pump panel; and the relief valve, which is mounted between the pump intake and discharge fittings. The pilot valve manages the system by sensing discharge pressure and controls the opening and closing of the relief valve. The relief valve directs water from the discharge of the pump back into the intake of the pump when pressure surges occur
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