B&C Technologies DI-475 Industrial - Manual (Page 19)

E. Install an inverted bucket steam trap and check valve at least 12 inches below steam coil
as close to the coil as possible.
F. A vacuum breaker should be installed in the piping. This will prevent the condensing
steam from causing a vacuum inside the coil and possibly damaging the coil.
G. The supply and return lines should be insulated. This will save energy and provide for the
safety of the operator and maintenance personnel.
H. Water pocket in the supply line, caused by low point, will provide wet steam to the coil
possibly causing 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 any
condensate in the line to drain to the header. Install a bypass trap in any low point to
eliminate wet steam.