FAE (Fire Apparatus Engineer)
-Simple Design
-No Transfer valve
-Single-stage impeller with single intake
-Limited to 750 GPM
-Single Stage Impeller with double intake
-High capacity pumps - 1,000 GPM and up - ANS-Single Stage Centrifugal Fire Pumps
-Tendency to pulse Fire streams.
-As the piston or gears wear, water escapes from the discharge side of the pump reducing
the capacity of the pump. (Slippage)
-Contaminate water can quickly damage the pump.
-Does NOT USE incoming Pressure. - ANS-Positive Displacement Pumps (Disadvantages)
-Uses incoming pressure and adds to it.
-Increases the capacity of the pump
-Discharges can be shut down for short periods of time while pump is turning with no
damage. (beware of heat.)
Delivers rated capacity at a higher NPP. - ANS-Advantages of Centrifugal pumps
.434 psi - ANS-What is One foot of water exert as a back pressure?
"For every action there is an equal and opposite reaction" - ANS-What is Newton's Third Law
of motion pertaining to Nozzle Reaction?
(Simplest design- 1st used in 17th century) Adapted to the steamer in the 19th century.
Silsby was the 1st to use it in 1856.
Rotary gear and Rotary vane - ANS-Rotary pumps
1-1/4"= 400 GPM
1-3/8"= 500 GPM
1-1/2"= 600 GPM
1-5/8"= 700 GPM
1-3/4"= 800 GPM
1-7/8"= 900 GPM
2"= 1000 GPM
80 PSI FL for nozzle - ANS-What is Master Stream Solid Stream GPM for tips?
1. 2 Hour: 100% @ 150 psi
2. 1/2 hour: 70% @ 200 psi
3. 1/2 hour: 50% @ 250 psi
4. 10 minutes: 100% @ 165 psi (overload or spurt test) - ANS-What are all the steps in
Certification Test (pre-service tests)?
1. 20 minutes: 100% @ 150 psi
2. 10 minutes: 70 % @ 200 psi
3. 10 minutes: 50% @ 250 psi
Optional: 100% @ 165 psi (overload or spurt test) - ANS-What are all the steps in a Service
Test?
1. Air Resistance
2. Gravity - ANS-What are the two variables that affect the reach of fire streams?
, 1. FL varies directly with the quantity of water flowing.
-( the larger the quantity the higher the FL-Same size hose.)
2. FL varies directly with the size of the hose.
-(the larger the hose the lower the FL-same quantity.)
3. FL varies directly with the length of the hose.
-(the longer the hose the higher the FL-same quantity.)
4. FL will stay the same regardless of the pressure as long as the flow is the same. - ANS-4
Hydraulic Laws of Friction
1.13 feet of lift - ANS-How high does One inch (1") mercury (inches in vacuum) lift?
1.728 cubic inches - ANS-What does One cubic foot of water contain in inches?
1"= 200 GPM
1-1/8"= 250 GPM
1-1/4"= 300 GPM
50 PSI FL for nozzle - ANS-What is Hand Lines Solid Stream GPM for tips?
10 psi - ANS-What is the recommended minimum psi that should be maintained on the
compound gauge when taking water from a hydrant?
10% to 15% - ANS-What percent can head and tail winds affect the reach of a stream?
100 psi - ANS-What is Fog nozzle pressure for Hand held nozzle and Master Stream?
100% @ 165 psi (done in certification test for 10 minutes) - ANS-What is a Spurt or Overload
test?
100% capacity @ 150 psi net pump pressure
70% capacity @ 200 psi net pump pressure
50% capacity @ 250 psi net pump pressure - ANS-What are Pump Tests?
14.7 psi - ANS-What is atmospheric pressure at sea level?
2.304 feet - ANS-How high will One psi elevate water?
200 GPM= 0.3 psi
300 GPM= 0.6 psi
400 GPM= 1.0 psi
500 GPM= 1.6 psi
600 GPM= 2.3 psi
700 GPM= 3.1 psi
800 GPM= 4.0 psi
900 GPM= 5.1 psi
1000 GPM= 6.3 psi - ANS-What is 5" hose friction loss per 100'(feet)?
200 GPM= 1.0 psi
300 GPM= 2.1 psi
400 GPM= 3.6 psi
500 GPM= 5.5 psi
600 GPM= 7.8 psi
700 GPM= 10.5 psi
800 GPM= 13.6 psi
900 GPM= 17.1 psi
1000 GPM= 21.0 psi - ANS-What is 4" hose Friction Loss per 100'(feet)?
200 GPM= 10psi
300 GPM= 21 psi
400 GPM= 36 psi (RED LINE)
500 GPM= 55 psi
600 GPM= 78 psi
-Simple Design
-No Transfer valve
-Single-stage impeller with single intake
-Limited to 750 GPM
-Single Stage Impeller with double intake
-High capacity pumps - 1,000 GPM and up - ANS-Single Stage Centrifugal Fire Pumps
-Tendency to pulse Fire streams.
-As the piston or gears wear, water escapes from the discharge side of the pump reducing
the capacity of the pump. (Slippage)
-Contaminate water can quickly damage the pump.
-Does NOT USE incoming Pressure. - ANS-Positive Displacement Pumps (Disadvantages)
-Uses incoming pressure and adds to it.
-Increases the capacity of the pump
-Discharges can be shut down for short periods of time while pump is turning with no
damage. (beware of heat.)
Delivers rated capacity at a higher NPP. - ANS-Advantages of Centrifugal pumps
.434 psi - ANS-What is One foot of water exert as a back pressure?
"For every action there is an equal and opposite reaction" - ANS-What is Newton's Third Law
of motion pertaining to Nozzle Reaction?
(Simplest design- 1st used in 17th century) Adapted to the steamer in the 19th century.
Silsby was the 1st to use it in 1856.
Rotary gear and Rotary vane - ANS-Rotary pumps
1-1/4"= 400 GPM
1-3/8"= 500 GPM
1-1/2"= 600 GPM
1-5/8"= 700 GPM
1-3/4"= 800 GPM
1-7/8"= 900 GPM
2"= 1000 GPM
80 PSI FL for nozzle - ANS-What is Master Stream Solid Stream GPM for tips?
1. 2 Hour: 100% @ 150 psi
2. 1/2 hour: 70% @ 200 psi
3. 1/2 hour: 50% @ 250 psi
4. 10 minutes: 100% @ 165 psi (overload or spurt test) - ANS-What are all the steps in
Certification Test (pre-service tests)?
1. 20 minutes: 100% @ 150 psi
2. 10 minutes: 70 % @ 200 psi
3. 10 minutes: 50% @ 250 psi
Optional: 100% @ 165 psi (overload or spurt test) - ANS-What are all the steps in a Service
Test?
1. Air Resistance
2. Gravity - ANS-What are the two variables that affect the reach of fire streams?
, 1. FL varies directly with the quantity of water flowing.
-( the larger the quantity the higher the FL-Same size hose.)
2. FL varies directly with the size of the hose.
-(the larger the hose the lower the FL-same quantity.)
3. FL varies directly with the length of the hose.
-(the longer the hose the higher the FL-same quantity.)
4. FL will stay the same regardless of the pressure as long as the flow is the same. - ANS-4
Hydraulic Laws of Friction
1.13 feet of lift - ANS-How high does One inch (1") mercury (inches in vacuum) lift?
1.728 cubic inches - ANS-What does One cubic foot of water contain in inches?
1"= 200 GPM
1-1/8"= 250 GPM
1-1/4"= 300 GPM
50 PSI FL for nozzle - ANS-What is Hand Lines Solid Stream GPM for tips?
10 psi - ANS-What is the recommended minimum psi that should be maintained on the
compound gauge when taking water from a hydrant?
10% to 15% - ANS-What percent can head and tail winds affect the reach of a stream?
100 psi - ANS-What is Fog nozzle pressure for Hand held nozzle and Master Stream?
100% @ 165 psi (done in certification test for 10 minutes) - ANS-What is a Spurt or Overload
test?
100% capacity @ 150 psi net pump pressure
70% capacity @ 200 psi net pump pressure
50% capacity @ 250 psi net pump pressure - ANS-What are Pump Tests?
14.7 psi - ANS-What is atmospheric pressure at sea level?
2.304 feet - ANS-How high will One psi elevate water?
200 GPM= 0.3 psi
300 GPM= 0.6 psi
400 GPM= 1.0 psi
500 GPM= 1.6 psi
600 GPM= 2.3 psi
700 GPM= 3.1 psi
800 GPM= 4.0 psi
900 GPM= 5.1 psi
1000 GPM= 6.3 psi - ANS-What is 5" hose friction loss per 100'(feet)?
200 GPM= 1.0 psi
300 GPM= 2.1 psi
400 GPM= 3.6 psi
500 GPM= 5.5 psi
600 GPM= 7.8 psi
700 GPM= 10.5 psi
800 GPM= 13.6 psi
900 GPM= 17.1 psi
1000 GPM= 21.0 psi - ANS-What is 4" hose Friction Loss per 100'(feet)?
200 GPM= 10psi
300 GPM= 21 psi
400 GPM= 36 psi (RED LINE)
500 GPM= 55 psi
600 GPM= 78 psi
