- Rocket pump 0.5 Hp to 1 Hp should use 27 hose and 49 out 27 stainless steel elbow
- Fire pump 1.5 Hp to 2 Hp should use pipe 34 and stainless steel elbow 49 out 34
- 3 HP rocket pump using 40 hose and stainless steel elbow or 49 out 40 stainless steel shackle
- However, in some cases where the water level is deep, a smaller tube should be used.