The solar pump specification?
The 11 volt (peak) photovoltaic panel powers a self-regulating, variable speed, long life brushless DC motor. This drives Solartwin’s positive displacement pump. Valves in it stop “reverse thermosyphon” at night, and a bypass valve protects against “frozen by day” conditions. The fact that the solar punp is low voltage makes DIY solar hot water installations safer and easier in comparison with solar panel installations which need to connected to mains elecrticity in order to get them to work. Back to the top Flexible solar water pipes. Solartwin’s freeze-tolerant, corrosion-resistant solar pipes are made of silicone rubber. Its extreme temperature tolerance range is: -60C to +200C! This silicone is also used, for hygiene reasons, for milk pipes in dairies. Its material conforms to the requirements of UK-WRAS for hot water and European Extraction Testing Regs 90/129/EC (BGVV XXI) for food contact, and USA FDA 21 CFR 177.2600 for food contact. That’s why it is an ideal solar panel making
