51 e le v a t i on de ter m i n e s r e q u i r e d pu mp s t r en g t h D i s t a n c e d e t e r m i n e s i n c r e a s e i n p i pe si z e Every meter or foot of hosepipe on suction or delivery piping creates friction resistance which is added to the static head vertical elevation The longer the discharge run the more the friction If the discharge length is too long friction can be signifcantly reduced by increasing the diameter of the hose or pipe T o maintain the required fow over great distances use these guidelines T otal length of hosepipe Up to 300 m 1000 ft Use the recommended diameter of hosepipe according to the fow requirements indicated on page 81 Over 300 m 1000 ft Increase the diameter of hose pipe according to the fow re quirements on page 81 Example If a pump must transport 62 ls 1000 US gpm of product over 400 m 1300 ft for instance you should increase the hose pipe diameter from 6 to 8 See page 54 for friction losses in pipes and hoses