6 Hoze Nozzles And Flow Rates

Question 1

Operating psi for solid stream master stream nozzle

Answer 1

80 psi

Question 2

For the discharge formula in gpm go a solid nozzle, d stands for

Answer 2

Diameter of orifice in inches

Question 3

For the discharge formula in gpm go a solid nozzle, NP stands for

Answer 3

Nozzle pressure in psi

Question 4

Type of fog nozzle mechanism that can make a narrow pattern but more often provides a wide angle pattern

Answer 4

Impinging stream.

Question 5

Fog pattern created by deflecting water around inside circular stem then exterior barrel.

Answer 5

Periphery deflected

Question 6

Type of flow nozzle that is designed to flow specific volume on all patterns at a specific discharge pressure

Answer 6

Constant flow fog nozzle

Question 7

Type of flow fog nozzle that allows operator to select the flow rate

Answer 7

Selectable gallonage

Question 8

Type of flow fog nozzle that allows a change in pattern while maintaining the same nozzle pressure. Change in gallonage causes nozzle to adjust and stream appearance remains suitable

Answer 8

Automatic nozzle

Question 9

Although stream produced by an automatic nozzle may appear adequate, if proper discharge pressure is not applied, the stream may not

Answer 9

Flow sufficient water for fire suppression

Question 10

High pressure fog nozzles operate at pressure up to

Answer 10

800 psi.

Question 11

Gallonage flow for high pressure fog nozzles is what

Answer 11

Low.

Question 12

Generally the maximum gpm for a handline is

Answer 12

350 gpm

Question 13

Fog nozzle master streams are generally operated at what psi

Answer 13

100

Question 14

Master stream commonly called deck gun. Permanently mounted on apparatus

Answer 14

Fixed monitors

Question 15

Master stream mounted on apparatus that is removable. May have flow limitations when used on ground.

Answer 15

Combination monitors

Question 16

Master stream stored on the apparatus for deployment wherever it’s needed

Answer 16

Portable monitors

Question 17

Type of nozzle sometimes referred to as a distributor nozzle, although they are different.

Answer 17

Cellar nozzle

Question 18

Cellar nozzles can also be deployed where

Answer 18

In attics or void spaces

Question 19

Type of nozzle also known as a penetrating nozzle

Answer 19

Piercing nozzle

Question 20

The tip of a percent nozzle is an impinging jet nozzle capable of what flow

Answer 20

Appx 125 gpm. At 100 psi

Question 21

What is at the opposite end of a piercing nozzle

Answer 21

Striking surface to drive nozzle

Question 22

A type of nozzle typically brass with impinging holes fed by a booster hose for use down a stove flu

Answer 22

Chimney nozzle

Question 23

Flow rate of a chimney nozzle

Answer 23

1.5-3 gpm at 100 psi.

Question 24

As water is discharged from a nozzle, the counter force pushes back. This is called

Answer 24

Nozzle reaction

Question 25

NR stands for

Answer 25

Nozzle reaction in pounds

Question 26

Simple calculation for foreground nozzle reaction of solid stream

Answer 26

NR= Q/3

Question 27

Q for nozzle reaction formulas stands for

Answer 27

Total flow through nozzle in gpm

Question 28

Simple fireground calc for fog nozzle reaction.

Answer 28

NR = Q/2

Question 29

Operating psi for solid stream handling nozzle

Answer 29

50 psi