... be combined with gas or electric heater 6. Max. Pressure: 12bar; Operating Pressure: 6 bar7. It can be used for other ... . When the temperature difference between solar collector and tank doesn't reach the set value, the circulation pump will be shut ... : 5L, 8L, 12L, 19L, 20L, 24L 12. Pressure resistance: 10 bar pressure for expansion vesselHeat pipe solar water heater specification:DescripitionSplit ...