
![]() The pumping of ground water from boreholes from inception until recent years was always achieved using solid shaft driven pumps supported by rigid column and powered above ground by various means - windpower, diesel engine, petrol engine, electric motor etc. In the early 1960’s various electric motor manufacturers developed an electric motor that could be used down a borehole, completely submerged with the pump. This technological breakthrough completely changed the face of borehole pumping as we now no longer needed costly, cumbersome drive shafting down the bore. In addition to lower capital costs, submersibles were easier to install, more economical to run and made for a more aesthetically pleasing site. Little wonder they now dominate bore pump sales. With this pump developed it became obvious that the traditional steel pump column was no longer the most desirable option - it was heavy, supplied in short lengths with many joints, was difficult to transport and was very suspect to corosive water and indeed scaling even with good water. In 1980 Angus Flexpipes U.K. released a product, called Wellmaster, that was a totally corrosion resistant, light weight, flexible riser that could be installed and retrieved in one continuous length. In addition Wellmaster did not require support cables as it was able to carry the total weight of the entire installation itself, negate the pumps desire to rotate and withstand the discharge pressures necessary on such systems. Installation of the Wellmaster is carried out in most cases using a roller with the hose attached to a vehicle. This allows the Wellmaster to run in under its own weight - retrieval is via the same process. The end result is therefore, a totally corrosion resistant, flexible, light weight column system which is also easy and quick to install and retrieve. |