Siphon injectors are used to introduce chemical into the high pressure side of the system. When jetting at high pressure no chemical is introduced. When the pressure is reduced to approx 25 - 30 bar chemical is introduced into the water flow The pressure is normally reduced using an adjustable nozzle, or a twin lance lance with a large jet (typically a 4030).
The orifice is chosen by pump performance, typically:-
Pump Flow (l/min) |
Orifice size (mm) |
9-11 |
1.8 |
11-13 |
2.1 |
15-18 |
2.3 |
Call |
1.2 |