... water for factory, hotel, school, and so on. non pressure solar collector Working principle:Combined many collectors with water storage tank as ... the ground.5.We have singe wing and double wings solar collector for non-pressurized type.6.We have designed several ... interest, please let us know, we will design a satisfactory project for you.Specification1. Split Tank Capacity: 500L, 1000L,5000L, 10000L ...