INSTALLING DISTRIBUTION PIPING
Hanger Applications
Install the pipe hangers in accordance with good piping
practice as well as the following:
1. Refer to ASME B31.1, “Power Piping Code,” and any
appropriate local codes and standards.
2. A hanger should be installed between fittings when
the fittings are more than 2 ft. (.6 m) apart.
3. A hanger should be installed at a maximum of 1 ft.
(.3 m) from the nozzle. It must be located to keep noz-
zle from moving vertically.
4. The hangers must be UL listed and rigidly supported.
The Hanger Application Table and Figure 6 list some
typical hangers used for different mounting surfaces.
Hanger Application Table
Hanger
T
ype Application
No. 1 For attaching to wood beams
No. 2 On level ceilings of sufficient thickness to
permit proper fastening
No. 3 For 2 in. and smaller pipe under sloping
ceilings and roofs
No. 4 For special cases where punching is more
economical than using clamps
No. 5 For sheathed ceilings of wood construction
with sufficient thickness
No. 6 For most cases except where plastering is
done after installation
No. 7 For attaching to concrete beams
No. 8 For attaching to lower flange of beam or truss
No. 9 To keep piping closer to beam than is possible
with clamp and ring
No. 10 Suitable for 3/4 to 2 in. pipe where necessary
to hang pipe at a distance from wall
No. 11 For attaching to channel iron
No. 12 For attaching to bottom of steel beams
FIGURE 6
001875
SECTION VI
UL EX-4510 12-1-01 Page 6-6
Installation
NO. 1 NO. 2 NO. 3 NO. 4 NO. 5 NO. 6 NO. 7
NO. 8 NO. 9 NO. 10 NO. 11 NO. 12
7 IN.
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