Mainly used in water boiler, heat exchanger, evaporimeter, and boiler and so on. Descriptions:Thread ... the copper fitting)Mainly used in water boiler, heat exchanger, evaporimeter, and boiler and so on. It has ... of container Advantages:(1)Corrosion protection,(2)protect water heater, water containers of steel structure,(3)protect the ... Anode Rod cleaning for Pressurized solar water heater DN20