Firefighting Concentric Reducer mainly used to transport water or other liquids and to connect firefighting equipment together. Used to join two straight pieces in pipelines with a different diameter. It consists of a hollow cylindrical body with internal female thread. Based on the corresponding rules and standards, fire fittings must be painted red to make them distinct from other pipeline systems. It has good pressure resistance, corrosion resistance and high temperature resistance. It is UL listed, FM listed, and nationally recognized safety standards. Available with a variety of diameters staring from 1*1.5" and 4*6".