Install Instructions

4
Indoors - Figure 1
Series 007 may be installed in either a vertical or horizontal
position. Pipe lines should be thoroughly flushed to
remove foreign material before installing the unit. A strainer
should be installed as shown, ahead of backflow preventer to
prevent disc from unnecessary fouling. Install valve in the line
with arrow on valve body pointing in the direction of flow.
For indoor installations, it is important that the valve be easily
accessible to facilitate testing and servicing. Do not install in a
concealed location.
CAUTION: Do not install with strainer when backflow preventer
is used on seldom-used water lines which are called upon dur-
ing emergencies, such as fire sprinkler lines, etc.
It is important that Series 007 be tested periodically in compli-
ance with local codes, but at least once a year or more often
depending upon system conditions.
NOTE:
Fire Protection System Installations
The National Fire Protection Agency (NFPA) Guidelines require
a confirming flow test to be conducted whenever a “main line”
valve such as the shutoff valves or a backflow assembly have
been operated. Certified testers of backflow assemblies must
conduct this test. The trim valves of the detector meter bypass
line, on assemblies so equipped, should be shutoff during the
confirming flow test. When the test is completed the trim
valves must be retuned to a fully open position.
Outside Building Above Ground -
Figure 2
In an area where freezing conditions do not occur, Series 007
can be installed outside of a building. The most satisfactory
installation is above ground and should be installed in this
manner whenever possible. In an area where freezing condi-
tions can occur, Series 007 should be installed above ground
in an insulated enclosure.
Annual inspection of all water system safety and control valves
is required and necessary. Regular inspection, testing and
cleaning assures maximum life and proper product function.
Parallel - Figure 3
Consult Local codes for Approval
Two or more Series 007 smaller size valves may be piped in
parallel (where approved) to serve a larger supply pipe main.
This type of installation is employed whenever it is vital to
maintain a continuous supply of water/where interruptions for
testing and servicing would be unacceptable. It also has the
advantage of providing increase capacity where needed
beyond that provided by a single valve and permits testing or
servicing of an individual valve without shutting down the com-
plete line. For two valve installations the total capacity should
equal or exceed that required by the system.
The quantity of valves used in parallel should be determined by
the engineers judgement based on the operating conditions of
a specific installation. (See F-FC regarding flow curves)
INSTALLATION NOTE: The flange gasket bolts for the gate
valves should be retightened during installation as the bolts
may have loosened due to storage and shipping.
Installation Instructions
2
1
⁄2" and 3" 007
2
1
⁄2", 3" 007
2
1
⁄2", 3" 007
Meter
Min. 12"
Strainer
Model 77F-D-FDA
Strainer Model 77F-D-FDA
Now Available, WattsBox Insulated Enclosures.
For more information, send for ES-WB or ES-WB-T.
Figure 1
Figure 2
Figure 3
RP-IS-007.indd 4 10/22/08 3:21:24 PM