3
Indoors -
Figure 4
Series 007 may be installed in either a vertical or horizontal posi-
tion. Pipe lines should be thoroughly flushed to remove for-
eign material before installing the unit. A strainer should be installed
as shown, ahead of backflow preventer to prevent disc from
unnecessary fouling. Install valve inline 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 con-
cealed location.
CAUTION
!
Do not install with strainer when backflow preventer is used on sel-
dom-used water lines which are called upon during emergencies,
such as fire sprinkler lines, etc.
It is important that Series 007 and LF007 be tested periodically in
compliance with local codes, but at least once a year or more often
depending upon system conditions.
NOTICE
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 oper-
ated. Certified testers of backflow assemblies must conduct this
test. The trim valves of the detector meter bypass line, on assem-
blies so equipped, should be shutoff during the confirming flow
test. When the test is completed, the trim valves must be returned
to a fully open position.
Outside Building Above Ground -
Figure 5
In an area where freezing conditions do not occur, Series 007 and
LF007 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 conditions can occur,
Series 007 and LF007 should be installed above ground in an insu-
lated 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 6
Consult Local codes for Approval
Two or more Series 007 and LF007 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 test-
ing 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 complete line. For two valve instal-
lations the total capacity should equal or exceed that required by
the system.
The quantity of valves used in parallel should be determined by the
engineer's judgement based on the operating conditions of a spe-
cific installation. (See F-FC regarding flow curves)
NOTICE
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
Series 007 and LF007
2
1
⁄
2
" and 3"
2
1
⁄
2
", 3" 007 / LF007
2
1
⁄
2
", 3" 007 / LF007
Meter
Strainer
Series 77F-DI-FDA-125
Strainer Series 77F-DI-FDA-125
WattsBox Insulated Enclosures
Available in Aluminum or Fiberglass.
For more information, send for ES-WB.
Figure 4
Figure 5
Figure 6
