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RFDM4853 > Hose 1 3/4 > Flashcards

Hose 1 3/4 Flashcards

1
Q

Hose length

A

50’ sections

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2
Q

Hose construction

A

Rubber lined with a synthetic double jacket

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3
Q

Type of lugs on each coupling

A

Rocker lugs

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4
Q

1 3/4 is in reference to the diameter or the inside or outside of the hose?

A

Inside

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5
Q

Couplings are constructed of?

A

Pyrolite 1 ¾” NST

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6
Q

What does NST stand for?

A

National Standard Thread

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7
Q

What is the max capability of the Elkhart Chief nozzle, and what capacity does MDFR use it at?

A

Max capability is 250GPM, MDFR uses it at 70psi delivering 220GPM

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8
Q

How much friction loss for every 50’ length of hose?

A

15psi

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9
Q

What is the max length of hose that can be used?

A

400’

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10
Q

What type of nozzle is the 1 3/4” High Rise Nozzle?

A

Smooth Bore (15/16”)

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11
Q

At what rate does the High Rise Nozzle flow?

A

180GPM at 50psi

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12
Q

What other name is the 1 3/4” Preferred Foam Nozzle called?

A

1 3/4” SM-20

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13
Q

At what rate does the SM-20 flow?

A

125GPM at 75psi

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14
Q

Where will the pre-connected 1 3/4” lines be found?

A

Front bumper and two crosslays

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15
Q

How many feet of hose will the initial section of hose be on the cross lays and where are they connected to?

A

6’ and connected to the discharge port.

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16
Q

What type of load is used on the pre-connects?

A

Triple layer load A.K.A S load

17
Q

How long are the bumper lines?

A

100’

18
Q

How long are the cross-lays?

A

150’ and 200’

19
Q

Why is a horseshoe implemented?

A

To be able to deploy the hose from the opposite side of where the nozzle is located.

20
Q

How many people does it take to pull the triple layer load (S load)?

A

1

21
Q

What is a disadvantage of the triple layer load (S load)?

A

The whole load must be completely removed from the bed before leading the nozzle end of the hose.

22
Q

How many riding positions are there?

A

4

23
Q

What are the riding positions?

A

1 Company Officer (OIC)

24
Q

What does the Nozzle FF (#4) take to the point of entry?

A

The nozzle and the first 50’ of hose

25
Q

When charging the line, what should the Nozzle FF (#4) be ensuring?

A
  • That the desired nozzle pattern is set

- Adequate flow/pressure from the hoseline

26
Q

What riding position assumes role as the door person?

A

Hydrand FF (#3)

27
Q

What riding position assumes the backup of the Nozzle FF (#4)

A

1 Company Officer (OIC)

28
Q

What end and how far does it get pulled through the tray when loading the triple layer load (S load)?

A

Female end and 24”, then fold the coupling approximately 12” over the side from the end

29
Q

How many feet from the last coupling should you pick up the hose when loading the triple layer load (S load)?

A

2-4 feet

30
Q

Nozzle should always be positioned where when entering a fire?

A

Out in front of you, not at your side

RFDM4853 (2 decks)

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