Table 7.1: RAUPEX Bend Radius
Typical Minimum Bend Radius in (mm)
Pipe Size
Typical 8X OD
Min. Cold 5X OD
Min. Heated 3X OD
3/4 in
7.0 (178)
4.375 (111)
2.625 (67)
1 in
9.0 (229)
5.625 (143)
3.375 (86)
1 1/4 in
11.0 (279)
6.875 (175)
4.125 (105)
1 1/2 in
13.0 (330)
--
--
2 in
17.0 (432)
--
--
Bend Radius
90
Fig. 7.13: Bend radius of RAUPEX pipe
7.7 Distance Between Fittings
A minimum distance between
fi
ttings is required to ensure
the
fi
ttings are not damaged during the expansion process by the
installation tools. A minimum pipe length of 3 times the length of
sleeve is required between
fi
ttings for proper installation.
A
3A
PEXa
Compression Sleeve
RAUPEX Pipe
Fitting
Fig. 7.14: Required minimum distance between
fi
ttings
7.8 Pipe Protection
Place pipe protection around RAUPEX pipe to prevent abrasion when
passing through the building's framework.
When RAUPEX pipe passes through studs, walls,
fl
oor plates, joists
and other structural members, care must be taken not to damage the
pipe.
Protection is not required for installation in wood studs, walls,
fl
oor
plates or joists if the following provisions are met:
- The hole is at least 1/4 in (6 mm) larger than the outside diameter
(OD) of the pipe
- The pipe is free to move during expansion and contraction
- The hole is clean (e.g., free of splinters, burrs and rough edges)
- The hole is supporting only the weight of the pipe (with
fl
uid), and
not a mechanical device
- The hole has smooth, non-abrasive interior surface (e.g., bushing)
- Prevailing local codes allow such practice
Use of PE protection sleeve or other approved support device is
required for RAUPEX pipe when passing through holes in steel,
concrete or masonry walls, joists and other structural members.
When RAUPEX pipe runs through any abrasive material, or a hole that
does not allow free movement, it must be protected by PE protection
sleeve or another approved installation accessory, such as suspension
clamps or isolators.
Fig. 7.15: Isolation suspension clamps Fig. 7.16: Pipe isolator
Fig. 7.17: PE protection sleeve
29
