Mueller HG-1, Руководство по эксплуатации, Страница: 8 / 11

8
Options
HG-1 FLUSHING SYSTEM
PROGRAMMING HYDRO-GUARD UNIT FOR OPERATION
The following is a brief
overview and introduction to
Hydro-Guard Options.
Low Lead Brass Internal
Components and Piping
Freeze Protection
The Hydro-Guard HG-1 Unit
is freeze protected to 18" by
virtue of the bury depth of
the main 2" valve. The HG-1
offers a valve bury depth
of approximately 16" with
above ground electronics that
can be powered by a 9-volt
Lithium battery (operational in
temperatures as low as -20° F).
For additional freeze protection,
consider the HG-3 design.
The HG-3 (18" to 108" bury)
is equipped with Mueller's
patented freeze protection
system. The freeze protection
system allows the water in the
service piping to drain from the
device when a flush sequence
has ceased.