American Dryer Corp. AD-75 - Manual (Page 36)

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g. Water pockets in the supply line, caused by low points, will provide wet steam to the coil possibly
causing steam coil damage. ALL horizontal runs of steam supply piping should be pitched 1/4-inch
for every one (1) foot back towards the steam supply header causing the condensate in the line to
drain to the header. Install a bypass trap in any low point to eliminate wet steam.
IMPORTANT: Flexible hose/coupling must be used. Coil Failure due to hard plumbing
connections will VOID THE WARRANTY.