Series
709/709DCDA
Double Check Valve Assemblies
Double Check Detector
Assemblies
Sizes:
3
⁄
4
" – 10" (20-250mm)
RP/IS-709/709DCDA
Watts 8" (200mm) 709 OS&Y shown
• Installation
• Service
• Repair Kits • Maintenance
For field testing procedure, send for IS-TK-DP/DL,
IS-TK-9A, IS-TK-99E AND IS-TK-99D.
For other repair kits and service parts, send for
PL-RP-BPD.
For technical assistance, contact your local Watts repre-
sentative on back page.
IMPORTANT:
Inquire with governing authorities for local
installation requirements.
NOTE:
For Australia and New Zealand, line strainers
should be installed between the upstream shutoff valve
and the inlet of the backflow preventer.
Its important that this device be tested periodically in
compliance with local codes, but at least once per
year or more as service conditions warrant. If
installed on a fire sprinkler system, all mechanical
checks, such as alarm checks and backflow preven-
ters, should be flow tested and inspected internally
in accordance with NFPA 13 and NFPA 25.
RP-IS-709_709DCDA.indd 1
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