Armstrong Duralite™ plate fin steam coils are available in Centifeed (steam-distributing tube-type), Standard (opposite-end connections), and Two-Row Return-Bend construction. Centifeed, Standard and Return-Bend coils are made of 0.625″ OD tubes as standard. One-Row coils with 1″ OD tubes are available as options.

Depending on steam flow, long Centifeed coils may require steam to be fed from both ends to eliminate cold tube ends and the potential for freezing.