non pressure solar collector supply hot water for factory, hotel, school, and so on. non ... as complete projects, water in solar vacuum tube for heat transferring, by circulation pump and relative ... the heat to water tank.Features1.CE2.Suitable for swimming pool, school, army, hotel etc.3 ... let us know, we will design a satisfactory project for you.Specification1. Split Tank Capacity: 500L, 1000L,5000L, ...