Numbers Flashcards
Brownstone dimensions
20 to 25 feet wide, about 60 feet deep
Brownstone cockloft height
2’ to 3’, pitched toward the rear of the building
Engine apparatus total rated capacity and maximum pressure rating
2,000 GPM
600 psi
High Pressure Engine total rated capacity and maximum pressure
2,000 GPM
600 psi
- High pressure engines have been fitted with a high pressure discharge elbow, and specialized high pressure equipment.
3rd stage engine capacity and maximum pressure rating
2,000 GPM
700 psi
Squad apparatus total rated capacity and maximum pressure
1,000 GPM
600 psi
Idle pressure of apparatus in Volume
55 psi
Idle pressure of an apparatus in Pressure Operations
110 psi
Booster tank capacity
500 gallons
Deck pipe with 1 1/2” tip flow and pressure
660 GPM
100 psi at the tip
Deck pipe with 2” tip flow and pressure
840 GPM
50 psi at the tip
Deck pipe with 2 1/2” tip flow and pressure
2,000 GPM maximum rated flow
116 psi
1 3/4” hose operational specifications
Each length is 50’ long
Coupling size is 1 1/2’
Operating pressure normally limited to 250 psi
Friction loss is 20 psi per length
2 1/2” hose specifications
Each length is 50’
Coupling size is 2 1/2’
Operating pressure is limited to 250 psi
Friction loss is 5 psi per length
Lightweight 2” hose specifications
50’ long
2 1/2” coupling
Operating pressure is normally limited to 250 psi
Friction loss is 10 psi per length
Lightweight 2 1/2” hose specifications
Each length is 50 psi
Coupling size is 2 1/2”
Operating pressure is normally limited to 250 psi
Friction loss is 5 psi per length
3 1/2” hose specifications
Each length is 50’
Coupling size is 3”
Operating pressure limited to 300 psi
Friction loss is approximately 3 psi per length. This number depends on several factors including the length of the stretch and the amount of water flowing.
1 3/4” Nozzle
Used with 1 3/4” hose
1 1/2” coupling with a 15/16” MST that is used for attack
The required Nozzle pressure is 50 psi at the tip
Nozzle reaction is 68 lbs
1/2” OST can be attached to the MAT for overhaul purposes
2 1/2” Nozzle
Used with 2 1/2” hose
Has a 2 1/2” coupling and a 1 1/8” MST
At 40 psi nozzle pressure, the nozzle reaction is 78 lbs with a flow rate of 235 GPM
At 50 psi nozzle pressure, the nozzle reaction is 98 lbs
A 1/2” OST can be attached to the MST for overhaul purposes.
2 1/2” nozzle should be marked with a white stripe around the MST
2” nozzle
Used with 2” lightweight hose
2 1/2” coupling and a 1” MST
At 50 psi, the flow rate is 210 GPM with a nozzle pressure of 77 lbs.
At 55 psi, the flow rate is 220 GPM with a nozzle pressure is 95 lbs.
1 3/4” fog nozzle
Used with 1 3/4” hose
1 1/2” coupling and a fog tip
At 100 psi, the flow rate is 200 GPM with a nozzle reaction of 101 lbs
2 1/2” fog tip aka the “Aquastream”
2 1/2” coupling
Operating pressure is 50 to 80 psi
At 100 psi, the flow rate is 750 in full fog
2 1/2” fog nozzle
2 1/2” coupling
Used with 2 1/2” hose
At 100 psi, the flow rate is 250 GPM with a nozzle reaction of 121 lbs
Akron Turbomaster fog tip
2 1/2 “ coupling
Nozzle pressure is 100 psi at the tip
4 settings, capable of producing flows of 500, 750, 1000, or 1250 GPM
