Split solar water heater .Pressurized type .Solar Keymark, SRCC, CE .OEM available .Heat pipe 58-1800, 70-1800 SpecificationsSplit solar water heater .Pressurized type .Solar Keymark, SRCC, CE .OEM available .Heat ... pipe 58-1800, 70-18001. Reliable and efficient twin-glass solar tubes2 ...