Non-pressure Vacuum Tube Solar Water Heater ISO9001,ISO14001,RoHS,CCC,CE 10years warranty Factory price Non-pressure Vacuum Tube Solar Water Heater Vacuum tubes assimilat the ... the hotels, schools, hospitals and family, etc.Specifications TypeVacuum TubesCapacity(L)Loading Quantity(20'GP/40'GP/40'HQ)No.Dia ... -150-1800/58-15-HP15Ø58-1.8m15042/89/105JJR-200-1800/58-20-HP20Ø58-1.8m20035/74/86JJR-240 ...