The correct length of pipes is calculated by summing up the length of all vertical and horizontal right sections and bends. The static
suction head will be the distance between the non-return valve and the burner’s pump axle.
The depression must not be greater than 0.45 bar; should it be higher, some damage could occur to the pump, with consequent
increase in mechanical noises and ,eventually, a failure.
MAXIMUM LENGTH OF SUCTION LINES FOR TWO-PIPE SYSTEM
Two-pipe lift system
Two-pipe siphon feed system
PIPE LENGTH
PIPE LENGTH
NOZZLE PUMP PRESSURE (bar)
GPH
10 11 12 13 14 15 16
2,50 9,50 9,97 10,41 10,83 11,24 11,64 12,02
3,00 11,40 11,96 12,49 13,00 13,49 13,96 14,42
3,50 13,30 13,95 14,57 15,17 15,74 16,29 16,83
4,00 15,20 15,94 16,65 17,33 17,99 18,62 19,23
4,50 17,10 17,94 18,73 19,50 20,24 20,95 21,63
5,00 19,00 19,93 20,82 21,67 22,48 23,27 24,04
5,50 20,90 21,92 22,90 23,83 24,73 25,60 26,44
6,00 22,80 23,92 24,98 26,00 26,98 27,93 28,84
6,50 23,70 25,91 27,06 28,17 29,23 30,26 31,25
7,00 26,60 27,90 29,14 30,33 31,48 32,58 33,65
7,50 28,50 29,90 31,22 32,50 33,73 34,91 36,05
8,30 31,54 33,08 34,55 35,97 37,32 38,63 39,90
9,50 36,10 37,87 39,55 41,17 42,72 44,22 45,67
10,50 40,06 41,73 43,74 45,41 47,20 48,90 50,50
12,00 45,60 47,80 50,00 52,00 54,00 55,90 57,70
13,80 52,40 55,00 57,50 59,80 62,10 64,20 66,30
15,30 58,10 61,00 63,70 66,30 68,80 71,10 73,60
17,50 66,50 69,80 72,90 75,80 78,70 81,50 84,10
19,50 74,10 77,70 81,20 84,50 87,70 90,80 93,70
21,50 81,70 85,70 89,50 93,20 96,70 100,10 103,40
24,00 91,20 95,70 99,90 104,00 107,90 111,70 115,40
GPH OUTPUT kg/h
NOZZLE FLOW RATE (DELAVAN B - MONARCH PLP)