TB 062 - 2-Inch High-Rise Hose System Flashcards
This hose is of a single jacket construction utilizing _____ _____ impregnated synthetic yarn as the cord material.
Nitrile rubber
It comes in __ foot lengths with _____” couplings and is ribbed to reduce wear and increase grip.
50
1-1/2
The shoulder of the couplings are ______ to reduce snagging on furniture, door frames, and other obstacles.
Tapered
The hose is____ in color
Blue
A benefit of this hose, especially when working in the confined spaces of stairwells and interior hallways, is its ability to
Resist kinks
Under pressure, the hose can be bent to within __inches before it will kink.
12 inches
your flow will be ____ gpm with a friction loss of ___ psi per 100 feet of 2” hose.
200
35psi
A Company’s complement will consist of two complete ____-foot hose packs and one _____ assembly.
100’
Pigtail
Each hose pack consists of:
l. ___ 50’ sections of lightweight blue hose
2. One 1-1/2” complete ___ gpm spray nozzle
3. One ____” X ____” reducer
4. ____ 2’ ladder straps
Two
200gpm
2-1/2 x 1-1/2
5
The pigtail assembly consists of:
l. One _’ section of lightweight 2-1/2” hose
2. One _____” to _____” gated wye
3. One lightweight _____ _____
4. ___ ladder straps
5. One 2-1/2” ___ degree elbow
8’
2-1/2 to 1-1/2
Folding scanner
2
60 degree
It takes five ladder straps, each ____-feet in length, to effectively hold the pack together.
Two feet
The hose packs are fashioned using a 30-45 minute air bottle to form a “__” shaped single layer or double layer pack.
U
Considerations for using either the single layer or double layer can be based on _____ ____ and ______ _____.
Compartment space and company preference
The single layer method produces a pack ___-inches taller than the double layer method.
Eight inches
Place the ______ coupling of the first section of hose about ____-inches below the gauge of the bottle. Attach the reducer to the female coupling.
Female
10’’
To secure the hose pack, place a strap about eight-inches above the bottom of the pack on each side. One side will incorporate the
Nozzle reducer and the coupling
Placing the straps eightincheseight inches or so above the folds will help prevent permanent ____ in the hose.
Kinks
Place the ____ strap at the very top, or middle, of the pack.
Third
The fourth and fifth straps will be placed at _____ ____ to hold the pack together.
Convenient locations
When complete, the packs will weigh ___ pounds compared to 64 pounds for 100-feet of the old 2-1/2” lightweight hose.
38
The approximate dimensions will be __” tall by __” wide for the single layer pack and __” tall by __” wide for the double layer pack.
40’’
22’’
32’’
16’’
The pigtail assembly weighs
10 pounds
Pigtail
Attach a longer strap to the pigtail to use as a .
Carrying handle
The orifice plate can be found at one of the following locations:
- Soldered to the _____ itself
- Behind the gasket on the _____-_____
- Soldered to the ____ end of the drip-cock
- Behind the _____ on the 2-1/2” hose
Outlet
Drip-cock
Male end
Gasket
Removal of the orifice plate is recommended in order to get the maximum flow from the outlet. Failure to do so will restrict the flow from the outlet to 200 gpm at a minimum of __psi residual pressure.
50 psi
The orifice plate is removed by either removing the gasket, removing the orifice plate, and replacing the gasket; or, if it is soldered into place, by using a ______ _______ or your ______ ____, and using them as a pry bar to break the plate off of the opening.
Slotted screwdriver
Channel locks
If the orifice plate has been removed, the outlet should be opened_____ turns and adjusted from there
1-1/2 turns
Ideally, you want to flake the hose ___ the stairs from the fire floor.
Up
The hose lays will be the same as with a Combination Standpipe Sprinkler System with the difference being the outlet valve. This system utilizes a _____ _____ ____ (PRV) when the pressure at the outlet exceeds ____ psi.
Pressure reducing valve
150psi
Open the PRV _____
FULLY
The service test pressure for this hose is
300 psi
