solar collector 1.heat copper pipe 2.-30 degree use 3.EN solar keymark 4.12years export Split Pressurized Solar Water Heater System The whole ... control and automatic operation;3) Work under high pressure: can operate with pressure up to 0.6Mpa, It can be ... pump, expansion tank 5L-8L, controller, manometer, flow-meter, pressure relief valve, copper fittings etc.Technology data:Working volt: AC220V ...