Watts 007DCDA - Manual

For Non-Health Hazard Fire Applications
ES-007DCDA
2 1 /
2
" (65mm)
007DCDA
Now Available
WattsBox Insulated Enclosures.
For more information, refer to literature ES-WB.
Test Cock
Retainer
2nd Check
Module
1st Check
Module
Test Cock
Series 007DCDA
Double Check Detector Assemblies
Sizes: 2 1 ⁄
2
" – 3" (65 – 80mm)
Series 007DCDA Double Check Detector Assemblies are designed
exclusively for use in accordance with water utility authority on non-
health hazard 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 quality
from being pumped or siphoned into the potable water line.
Benefits: Detects leaks…with emphasis on the cost of unaccount-
able water; incorporates a meter which allows the water utility to:
• detect underground leaks 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 assem-
bly access. All sizes are standardly equipped with resilient seated
OSY shutoff valves and 5 ⁄
8
" x 3 ⁄
4
" (16 x 19mm) meter.
Features
• Fused epoxy coated cast iron unibody 2 1 ⁄
2
" – 3" (65 – 80mm)
• Replaceable seats
• Maximum flow at low pressure drop
• Compact for ease of installation
• Design simplicity for easy maintenance
• No special tools required for servicing
• Bronze body ball valve test cocks
• Modular spring loaded checks
• Furnished with bronze
5 ⁄
8
" x 3 ⁄
4
" (16 x 19mm) meter
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.
Specifications
A Double Check Detector Assembly shall be installed on fire protec-
tion systems when connected to a potable water supply. Degree of
hazard present is determined by the local authority having jurisdic-
tion. The backflow preventer shall be a complete assembly includ-
ing UL listed resilient seated OSY shutoff valves and four test cocks.
The test cocks located on the backflow preventer shall be mounted
at the top of the valve to reduce clearance problems and to assist
in the evacuation of air from the assembly. The assembly shall
consist of two independently operating modular poppet-type check
valves. The check valves shall utilize captured springs and shall
have replaceable seats. The checks shall be double-guided, both
along the outside edge of the check module and through the center
stem assembly. The seats shall be replaceable without the use of
special tools. Seat retention shall be done by the use of an inter-
locking bayonet-style cage and the use of threaded seats or seat
screws is prohibited. Access to the internal check assemblies shall
be via a single top entry cover. The cover shall be securely held in
place by stainless steel bolts. Where applicable the unit shall be FM
approved with FM approved OSY resilient seated shutoff valves.
The assembly shall include an auxiliary bypass line consisting of an
approved backflow preventer and water meter.
The assembly shall be listed or approved under the requirements of
ASSE Std. 1048, AWWA Std. C510-92 and CSA B64.5. Approved
by the Foundation for Cross-Connection Control and Hydraulic
Research at the University of Southern California. The assembly
shall be a Watts Regulator Company Series 007DCDA.
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
NOTICE
Inquire with governing authorities for local installation requirements