6. Firehose appliance and nozzles Flashcards
Attack hose must be tested annually at a pressure of at least ___ psi and is intended to be used at pressures up to ___ PSI
300
275
Supply hose must be tested annually at a pressure of at least ____ psi and is intended to be used at pressures up to ___ psi
200
185
An 1 3/4 hose can flow water at a rate between ___ GPM and ___ GPM.
120-200
The normal flow for a 1 inch booster hose is in the range of
40-50 gpm
Device that splits one hose stream into two hose streams
Wye
Similar to a gated wye but includes an additional 2 1/2 inch outlet
Water thief
Hose is appliance that combines two hose lines into one
Siamese connection
___ Valves are used on nozzles gated wyes and engine discharge gates
Ball valves
___ Valves are found on hydrants and on sprinkler systems
Gate valves
___ Valves are often found on the large pump intake connections
Butterfly valve
This appliance which is attached to a fire hydrant is used in conjunction with a pumper to increase water pressure in relay operations
Relay or hydrant valves
Low volume nozzle flow
40 gpm
Headline nozzle flow
60 -350 gpm
Master stream nozzle flow
+ 350 gpm
The most commonly encountered nozzle shut off mechanism is a ___
valve or quarter turn valve
Ball
