solar water heater with assistant tank

详情

Inner tank: Pressurized food grade SUS**4/2B stainless steel with optional 0.*1mm, 0.*5mm, 0.*0mm, 0.*0mm thickness; Outer tank: First choice: Aluminum zinc painted steel cover with inside (silver, white) , strong and anticorrosion effectively welded by argon arc; Second choice: SUS****2B stainless steel with optional 0.*1mm, 0.*5mm, 0.*0mm, 0.*0mm thickness; Capacity: *0/**8/**0/**5/***4/**2/**0/**6/**0/**8/**6/**4L; Vacuum tube: 3.3 Pyrex glass, magnetron sputtering ammonia- aluminum dual absorption coating with a thickness of 1.6mm, diameter *7 or *8mm and length ***0 or ***0mm, resisting *8mm hail; Tube quantity : *5, *8, *0, *4, *0, *2 and *6 PCS; Assistant tank capacity: 2L, 5L, 8L, *0L, *2L, *5L Heat insulating layer: improved polyurethane integral foaming with thickness ****5mm; Frame: First choice, coated galvanized steel with 1.*0mm thickness; second choice, stainless steel SUS**4/2B with optional 0.*1mm, 0.*5mm, 0.*8mm, 1.*0mm thickness; Fasteners: stainless steel screws Seal: imported silicone rubber polymer ringing to connect and seal them; Temperature: ****5 degree Celsius, temperature is over than ****4 degree in the winter Pressure: 0 Pa Heat preservation: *2 hrs Hail resistance: *8mm