Installation, Maintenance, & Repair
Series 719 and Series LF719
Double Check Valve Assembly
Sizes:
1
⁄
2
" – 2" (15 – 50mm)
You are required to thoroughly read all installation instructions
and product safety information before beginning the installa-
tion of this product.
FAILURE TO COMPLY WITH PROPER
INSTALLATION AND MAINTENANCE INSTRUCTIONS
COULD RESULT IN PRODUCT FAILURE WHICH CAN
CAUSE PROPERTY DAMAGE, PERSONAL INJURY AND/
OR DEATH.
Watts is not responsible for damages resulting from
improper installation and/or maintenance.
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 this informa-
tion is not consistent with local building or plumbing codes, the
local codes should be followed.
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.
Corrosive water conditions, and/or unauthorized adjustments
or repair could render the product ineffective for the service in-
tended. Regular checking and cleaning of the product’s internal
components helps assure maximum life and proper product
function.
RP/IS-719
NOTE:
For Australia and New Zealand: Pipeline strainers
should be installed between the upstream shutoff valve and the
inlet of the backflow preventer.
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 modifica-
tions on Watts products previously or subsequently sold.
1" 719QT and LF719QT
WARNING
!
Testing
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
representative.
