5.1

General Principles

5.1.3

Flushing

Allowance for flushing is an important part of a Leeaky Hose installation. In the normal operation of the hose any particles will be left behind on the floor of the hose as the water passes through the walls. An installation should either have a back-flush system (particularly if the hose is deeply buried), or the end plug clearly marked so that it can be accessed and removed for flushing.

Regularity of flushing. There are no hard and fast rules, though it should be part of any preventative maintenance programme to flush every six months. The visibility of particles is not always a guide to particle density and flushing should be the first procedure carried out should any drop in the flow rate be noticed. Note: any drop off in water flow rates will be gradual. How to Flush - No special water supply is needed. After removal of the end plug/s, or opening the flush valve, the water would be run at 50% greater flow rate for an hour, or until the discharged water is seen to run ‘clean’.