Operating Pumps

Question 1

What are the friction loss figures for FRV hoses?

Answer 1

• 38mm is 220kpa @ 500lpm
• 50mm is 220kpa @ 750lpm
• 65mm is 55kpa @ 700lpm
• 90mm is 5kpa @ 500lpm

Question 1

What are the (5) friction loss rules?

DRISL

Answer 1

Diameter of hose
Roughness of hose interior
Independent of pressure
Square of the flow rate
Length of hose

Question 2

What is the maximum operating pressure of the main pump?

Answer 2

1400 kPa

Question 3

What is the maximum operating pressure of the 2nd stage/high pressure pump?

Answer 3

4000 kPa