Hydrants Chapter 6

Question 0

Dresser Low pressure hydrant:

Answer 0

• Same as smith except in appearance
• The dresser hydrant will provide 10% to 15%
  greater discharge than the smith hydrant

Question 1

Smith Low Pressure Hydrant:

Answer 1

• Black barrel with silver bonnet
• Two outlets, 2 1/2 and 4 1/2 inch
• Two valves, main and drain
• Number on the barrel indicates size of main
• White line under the number indicates hydrant
  is on a dead end main ( generally small cause
  fed from one direction)

Question 2

Chapman and Eddy Hydrants:

Answer 2

• Either two 2 1/2 inch outlets or one 2 1/2 inch
  outlet and one 4 1/2 inch outlet
• Eddy found in areas supplied by Jamaica
  water supply
• Opens opposite direction of smith & dresser
• Hydrants barrels will be painted black and open in the same direction (clockwise) as other city hydrants.

Question 3

High Pressure Hydrants:

Answer 3

• Being removed and should be avoided

Question 4

35 foot Soft Connection:

Answer 4

• Yellow synthetic hose with 4 1/2 inch butts.
• Provides largest flows of the connections
• Shall ONLY be used as a supply line from a hydrant

Question 5

10 foot small connection:

Answer 5

• 3 1/2 inch hose (3 inch butts)
• Provied the most flexibility in connections but
  provides the LEAST water flow
• Only be used as supply line from a hydrant

Question 6

50 foot length of 3 1/2 inch hose:

Answer 6

• Provides most flexibility but the least water flow

Question 7

10 foot hard suction:

Answer 7

• 4 1/2 in hose with 4 1/2 inch butts

- Must be used for drafting, rarely for hydrants

Question 8

Can you strike the custodian wrench (i.e axe

Hammer)?

Answer 8

NEVER

Question 9

White Hydrant Disc:

Answer 9

• Unserviceable Hydrant AND 3 inch Siamese of

out of service auxiliary fire protection systems

Question 10

Yellow Hydrant Disc:

Answer 10

• Frozen Hydrant

Question 11

Blue Hydrant Disc:

Answer 11

• For placement on 3 inch Siamese of auxiliary fire protection system to indicate a system is not functioning as a fully automatic system and/or a portion of a system is such that it will operate effectively when supplied

Question 12

If 2 1/2 inch hydrant cap is missing and No apparatus cap or spare cap can be used, how else can you plug the 2 1/2 inch outlet?

Answer 12

T-Bolt

Question 13

Yellowe Hydrants on parkways or expressway:

Answer 13

Must be turned on using a curb valve (would be big hazard if opened illegally)

Question 14

Red Air cock Hydrants:

Answer 14

Hydrants on 30 inch diameter or greater main in strategic locations ( highs and lows)

Question 15

Red Satellite Water System Hydrants:

Answer 15

• Engine companies should avoid use of these
• Twin hydrants arrangement on large mains for a rapid and adequate source of water for satellite water system.
• Two special hydrants, each with two 4 1/2 inch outlets, painted red and located close to each other.

Question 16

If a custodian wrench is broken, what should be done?

Answer 16

Should be delivered to the administrative Division for replacement by technical services. They will assign a spare