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I-800
When a sprinkler activates, a significant reactive force can be exerted on
the pipe. With a pendent sprinkler, this reactive force can cause the pipe
to lift vertically if it is not secured properly, especially if the sprinkler drop
is from small diameter pipe. The pipe must be braced against the vertical
lift-up with the closest hanger.
Two common methods are used to brace Victaulic FireLock CPVC Sprin-
kler System Pipe:
1.
One technique uses a standard band hanger by positioning the
threaded support rod to
1
/
16
-inch above the pipe. However, it is important
that the rod does not contact the pipe.
2.
Victaulic recommends the use of band hangers with surge
restraints to provide surge protection for the system. This easily installed
combination restricts the upward movement of the pipe, while keeping
the threaded support rod from contacting the pipe. Other approaches are
a split ring hanger or a special escutcheon, which prevents upward
movement of the sprinkler through the ceiling.
WARNING
• Pipe hangers/supports used with Victaulic FireLock CPVC Sprinkler System Pipe
must comply with the requirements of NFPA 13, NFPA 13D, and NFPA 13R.
• Hangers must be designed for the appropriate pipe diameter and have a minimum
1
/
2
-
inch, load-bearing surface.
• Hangers cannot contain rough or sharp edges that contact the pipe, and they must
not bind the pipe from axial movement.
• DO NOT use any supporting devices that require the use of a hammer and/or nails for
installation.
The use of inappropriate hangers/supports or inappropriate installation techniques
could damage the pipe and cause serious personal injury, property damage, and/or
product damage.
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