Installation, Maintenance, & Repair
Series 007 and LF007
Double Check Valve Assemblies
Sizes:
1
⁄
2
" – 3" (15 - 80mm)
NOTICE
For Australia and New Zealand, line strainers should be installed
between the upstream shutoff valve and the inlet of the backflow
preventer.
3
⁄
4
" 007M3QT
RP/IS-007
Watts product specifications in U.S. customary units and metric
are approximate and are provided for reference only. For precise
measurements, please contact Watts Technical Service. Watts
reserves the right to change or modify product design, construc-
tion, specifications, or materials without prior notice and without
incurring any obligation to make such changes and modifications
on Watts products previously or subsequently sold.
Testing
For field testing procedure, refer to Watts installation sheets
IS-TK-DP/DL, IS-TK-9A, IS-TK-99E and IS-TK-99D found on
Watts.com.
For other repair kits and service parts, refer to our Backflow
Prevention Products Repair Kits & Service Parts price list PL-RP-
BPD found on
Watts.com.
For technical assistance, contact your local Watts representative.
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information
can result in death, serious personal injury, property
damage, or damage to the equipment.
Keep this Manual for future reference.
Installation Instructions
Series 007 and LF007
1
⁄
2
" - 2" (15 - 50mm)
Indoors -
Figure 1
Check local codes for installation requirements. 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
inline with arrow on valve body pointing in the direction of flow.
For indoor installations, it is important that the valve be easily acces-
sible 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 during emergen-
cies, 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. Regular inspection, testing and
cleaning assures maximum life and proper product function.
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.
Meter Box Installation
Local building or plumbing codes may require modifications
to the information provided. You are required to
consult the local building and plumbing codes prior to
installation. If the information provided here is not consis-
tent with local building or plumbing codes, the local codes
should be followed. This product must be installed by a
licensed contractor in accordance with local codes and
ordinances.
WARNING
!
Need for Periodic Inspection/Maintenance:
This product
must be tested periodically in compliance with local codes, but
at least once per year or more as service conditions warrant.
All products must be retested once maintenance has been
performed. Corrosive water conditions and/or unauthorized
adjustments or repair could render the product ineffective for the
service intended. Regular checking and cleaning of the product’s
internal and external components helps assure maximum life and
proper product function.
WARNING
!
