NEW REVERSE OSMOSIS MEMBRANES GENERATION - SW 315 40
The continuous research for better solutions to be adopted on RO plants for boats, brought in 2007 HP on the way to study, in exclusive cooperation with a RO membrane world leader manufacturer, a customized filtering RO module, able to use at its best the capacity of the boat pumps of the HP SC SAILBOAT KIT – HP SC – HP V – HP SC DOUBLE models.
These new membranes have a non standard diameter 3,15” but a standard length of 40”, and are able to better use all the flow of the medium pumping groups, optimizing the production rates. For example a single SW 315 40 produces a water quantity of 140 lt/h, as well as two standard membranes SW 2540, using the same amount of water and so using the same pumps, consuming the same amount of energy, without facing salt precipitation on the membrane film, avoiding the immediate clog of the membranes; kind of problems, that can be faced using the standard membranes SW 4040, that at the beginning have good production rates but that with a small feeding flow, they have a fast and sure clog. For all these reasons, the introduction of a custom membrane, studied, staring from the real production exigencies of the water making on board, is a winning strategy, also from the production costs point of view, advantaging as final result the economic choice of the end users. In fact a plant the installs two SW 2540 membranes would costs more than a single membrane SW 315 40 machine, getting out the same amount of water at the end. The plants installing the new membranes will be available from January 2008.

NEW FIBERGLASS PRESSURE VESSEL SERIES ( PV FG – EASY CHANGE)
It is well known that SS AISI 316 is massively used material on the pleasure boats. Also HP since its beginnings produces machines manufactured of SS AISI 316 components.
One of the disadvantages of the SS AISI 316, as the galvanic corrosion after some years, is the weight of the material. With the introduction of the new membranes series SW 315 40, HP designed and realised a fibreglass pressure vessel, without mechanical pressure seal parts in contact with the sea water. The “Easy Change” vessel caps opening system, adopted on our system since the beginning of the ’90, has not been modified. In the specific case for boats of the 3.15” X 40 a pressure vessel weight is 4 Kg against 16 Kg of two SS AISI 316, standard pressure vessel of 2,5” X 40 with a weight save of 12Kg, that is the 75% less. Availability from January 2008.