Pump Types
Water
Pump Terms
Math
Pump terms continued
100
This Pump type may be found on any pumping apparatus at Vienna.
What is a Centrifugal pump.
100
8.35 lbs
What is the weight of one gallon of water?
100
This Valve opens to discharge water to limit excessive pressure.
What is a Relief Valve?
100
FL=CQ2L
Friction loss Formula where
bonus
FL= friction loss in psi
C = friction loss coefficient
Q = flow rate in hundreds of gpm
L = hose length in hundreds of feet
100
Air priming system uses what effect to prime a fire pump
What is Venturi effect?
200
This pump type has 2 Impellers.
What is a 2 Stage pump?
200
Elevation gain or loss on water pressure.
What is 1 lb per 2 ft or 5 lbs per 10 ft story?
200
This occurs when a vacuum is created at the inlet of the pump impeller eye as the pump attempts to move more water on the discharge side of the impeller than is available to flow into the suction side of the impeller and causes the water to reach the boiling point.
What is Cavitation?
200
PDP=NP+TPL
Pump Discharge Pressure Formula
bonus
PDP= pump discharge pressure
np = nozzle pressure in psi
tpl = total pressure loss in psi
200
Intermediate partial bulkhead that reduces surge effect in a partiallly loaded liquid tank.
What is a baffle?
300
This pump panel type was found on Engine 121 before it was refurbished.
What is a Top mount pump?
300
1 million BTUs per minute.
What is the approximate cooling of a fire room flowing 100 GPM in a 10x10 room?
300
This valve is located at the outlet of the first-stage volute. It directs the water either to pump discharge VOLUME (parallel) position, or to second-stage intake PRESSURE (series) position, depending on the pump performance desired
What is a transfer valve?
300
EP=.5H
What is Elevation pressure loss formula
bonus
EP= Elevation presssure in psi
.5= constant
H= height it ft
300
AFFF
Aqueous film forming foam
400
Name the truck that does not have a midship fire pump.
What is the brush truck(320,321)?
400
1700x @ 212 degrees
What is the Volume expansion of liquid water into steam?
400
Force created by the rapid deceleration of water; causes a violent increase in pressure that can damage fixtures or rupture piping.
What is Water Hammer?
400
Total friction loss in 200Ft of 2 1/2 line with a wye to 2 1 3/4 lines 100 ft long flowing 150 gpm each.
What is approximately 60psi ?
400
the reduction in fluid pressure that results when a fluid flows through a constricted section (or choke) of a pipe.
What is the venturi effect?
500
Describe the pump on the 1959 Darly pictured here
What is 3 Stage champion fire pump?
500
100 psi.
What is the average static pressure on the fire hydrant in front of station 21?
500
Process of acquiring water from a static source and transferring it into a pump that is above the sources level.
What is Drafting?
500
Determine the water flow from a 2" tip master stream nozzle operating at 80 psi nozzle pressure
GPM = 29.7·d²·√NP = (29.7) (2)² (Ö80) (Use 81 for square root purposes) = (29.7) (4) (9) = (118.8) (9) = 1069.2 GPM (1070)
500
Using 2 or more pumpers to move water over a long distance by operating them in series.
what is a relay operation ?