... Split Pressure Solar BoilersSPECIFICATION:1. Standard capacity: 100,150L,200L,250L,300L,400L,500L. 600L,700L,800L,1000L.2. Type of tank: Pressurized ... heat exchanger: copper coils or stainless steel.7. The auxiliary heater: 1.5 -4KW8. Preservation time: more than 3 days.Others ... time: 15 days.Payment: L/C; T/TPackage: Seaworthy Cartons Split Pressurized Insulated Water Tank (Manufacture)