We've obtained a sales permit from the NRCS and the geysers are ready for sale.  

Installing a close coupled low-pressure geyser is one of the most cost-effective water heating solutions available. 

Low-pressure refers to the operating pressure of the geyser. The geyser tank can not operate at high pressures because the tank wall is only 0.35mm thick compared to a standard 1.2mm thick high-pressure geyser tank. The ends of the low-pressure geyser are not welded but folded to be watertight; hence the cost-effectiveness of the solar geyser.

An auxiliary tank or feeder tank is required and recommended to regulate the incoming pressure to the low-pressure geyser. The outlet of the geyser is gravity fed to the taps. A low-pressure anti-scald valve should be installed on the outlet of the geyser to ensure that the outlet temperature is not too hot for the user.