... Solar Water Heater Tank STANDARD SPECIFICATION:1. Capacity: 100,150L,200L,250L,300L,400L,500L. 600L,700L,800L,1000L.2. Type of tank: Pressurized ... , single coil or twin coils design available.6. The auxiliary heater: 1.5 -9KW7. Preservation time: more than 3 days ...