Watts 709DCDA - Manual

Check Assembly Module
Features a modular design concept which facilitates complete
maintenance and assembly by retaining the spring load.
First and second check valve spring modules are not inter-
changeable.
For Non-Health Hazard Applications
ES-709DCDA
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES
FOR LOCAL INSTALLATION REQUIREMENTS
709DCDAOSY
Now Available
WattsBox Insulated Enclosures.
For more information, send for literature ES-WB.
Series 709DCDA
Double Check Detector Assemblies
Sizes: 3" – 10" (80 – 250mm)
Series 709DCDA Double Check Detector Assemblies are
designed exclusively for use in accordance with water authori-
ty containment requirements. It is mandatory to prevent the
reverse flow of fire protection system substances, i.e. glycerin
wetting agents, stagnant water and water of non-potable qual-
ity from being pumped or siphoned into the potable water line.
Benefits: Detects leaks . . . with emphasis on the cost of unac-
countable water; incorporates a meter which allows the water
utility to:
• detect leaks underground that historically create great annual
cost due to waste.
• provide a detection point for unauthorized use. It can help
locate illegal taps.
Modular check design concept facilitates maintenance and
assembly access. All sizes are standardly equipped with
resilient seated OSY shutoff valves,
5 ⁄
8
" x 3 ⁄
4
" (16 x 19mm) meter and ball type test cocks.
Features
• Body construction fused epoxy coated cast iron
• Replaceable bronze seats
• Maximum flow at low pressure drop
• Compact for economy combined with performance
• Design simplicity for easy maintenance
• Furnished with 5 ⁄ 8 " x 3 ⁄ 4 " (16 x 19mm) bronze meter
• No special tools required for servicing
Specifications
A Double Check Detector Assembly shall be installed on fire
protection systems when connected to a potable water sup-
ply. Degree of hazard present is determined by the local
authority having jurisdiction. The unit shall be a complete
assembly including UL listed resilient seated OSY shutoff
valves and test cocks. The unit shall be UL/FM approved with
UL/FM approved OSY shutoff valves. The auxiliary line shall
consist of an approved backflow preventer and water meter.
The assembly shall meet the basic requirements of ASSE
1048; AWWA Std. C510 for Double Check Valves. Approved
by the Foundation for Cross-Connection Control and Hydraulic
Research at the University of Southern California. Assembly
shall be a Watts Regulator Company Series 709DCDA.
Check Assembly
Module
Test Cock
Cover
Seat Disc
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, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.