The pump tube located between the pump and the steam generator is designed to control the flow of water into the steam generator so that it receives the precise amount of water required at specific points in the sterilization cycle.

The tube is directional (pump to steam generator) and contains a precision orifice tube inside the main tube that has a precise diameter that controls the volume passing through into the steam generator. The orifice tube is located at the steam generator end of the main pump tube. The diameter of the fitting is represented on the outside of each pump tube by a numeric value. The larger the value, the larger the diameter of the orifice.

If the filters are clean and the pump flow parameters are not correct, then it may be possible to recover the correct water delivery by the replacement of the pump tube with one of larger or smaller diameter as appropriate.

Single pump tubes are available in a large number of diameters from 0.0210” diameter to 0.0290” diameter in 0.0005” increments.