Halo - Flat Plate Collector (PRESSURIZED Model) Venus flat plate solar water heaters harness the power of the sun and use it to the maximum to give you hot water when you need it. They come with a Super Efficient Collector with 100% copper fins and a corrosion resistant Porcelain enamel tank that offers hard water protection. Get one today and you will realise it is the most reliable and energy efficient solar water heater available. Available Models100 Litres, 200 LitresGuranteeFor HA100 - 7 YearsFor HA200 - 7 YearsCatalogue