Pump Charts

Question 1

You are supplying a Blitzfire @ 1900 litres per minute and a 65mm hand line @ 510 kPa. Your static hydrant pressure was 450 kPa. The compound gauge now reads 360kPa.

Can you supply an aerial with an Akromatic 1250 nozzle?

Answer 1

No

Question 2

What pressure is added for a highrise system when calculating pump discharge pressure?

Answer 2

150 kpa

Question 3

You are flowing 700 litres/minute with a 44mm hand line through five 15m lengths of 44mm hose. What is your pump discharge pressure?

Answer 3

1100 kpa

Question 4

What is the friction loss per length of a 65mm hose flowing 1400 litres per minute?

Answer 4

80 kpa

Question 5

What is the pump discharge pressure for a highrise fire on the 36th floor?

Answer 5

2340 kpa

Question 6

You are supplying two 44mm hand lines at 950ka and an aerial with an Akromatic 1250 nozzle. You are being supplied by a hydrant with a static pressure of 450 kPa through 3 lengths of 125mm hose. According to table 2.3 how much remaining water is available?

Answer 6

130 lpm

Question 7

What is the optimum nozzle pressure for solid bore hand lines?

Answer 7

350 kpa

Question 8

You are supplying a Blitzfire set on “low” flowing 1900 lites/minute through six-15m lengths of 65mm hose.

What is the nozzle pressure?

Answer 8

970 kpa

Question 9

You are supplying a Blitzfire with a 32mm stackable tip @ 960 kPa on a leader line and a 44mm jumpline @650 kPa.
Your compound gauge has gone from 550 ka down to 478 kPa. How much water is available according to chart
2.4?

Answer 9

4600 lpm

Question 10

What is the coefficient of friction for a 77mm hose?

Answer 10

.4