Lesson 8- Hose, Gleeson & Four-way Valves,

Question 1

The cords of the jacket running around the hose are called

Answer 1

woof

Question 2

the cords of the jacket running lengthwise are called

Answer 2

warp

Question 3

what material is used for woof cords

Answer 3

dacron

Question 4

what material is used for warp cords

Answer 4

cotton

Question 5

what are the required identification stripes that are to be woven into the outer jacket that indicates hose is constructed to LAFD specifications

Answer 5

2 black
4 white
2 red
4 white
2 black

Question 6

The rubber used to form the tube shall consist of Compound #1 grade natural rubber and neoprene

This combination will keep tube from checking and cracking from exposure to ozone for a period of how many years

Answer 6

7 years

Question 7

New hose is to be cured in what position to make it easier to load in bed

Answer 7

flat cured

Question 8

Couplings used are to be what type

Answer 8

extruded

Question 9

hose working and burst pressure that are hydrostatically tested, are tested in what lengths

Answer 9

short 3 foot sections

Question 10

what are the working and burst pressure of 1”, 1 1/2”, 2 1/2” dacron and cotton jacket hose

Answer 10

working pressure= 600 psi

burst pressure= 900 psi

Question 11

All hose delivered under Los Angeles Fire Department
specifications is required to be guaranteed by the
manufacturer fora period of __ years against failure
due to faulty material or workmanship

Answer 11

5 years

Question 12

When testing hose, to ensure all air is driven out of the line being tested, the male end of the hose should be held how high above the rest of the hose with shut off attached in the open position?

Answer 12

two or three feet

Question 13

damp hose shall not remain in hose bed longer than

Answer 13

24 hours

Question 14

hose is damaged by

Answer 14

1. mechanical injury
2. heat
3. mildew/mold
4. acids
5. gasoline/oils

Question 15

When driving over hose

Answer 15

1. Do not drive over couplings
2. coast over hose

Question 16

Gleeson valves are used to lower high pressure and can be used on

Answer 16

1. Boats
2. High pressure hydrants (red tops)
3. high pressure hose lines found in harbor/mountains

Question 17

purpose of the 4 way valve is

Answer 17

provide a means of changing from direct hydrant pressure to pump pressure without shutting off the flow of water