Watts 719 - Manual

Series 719
Double Check Valve Assemblies
Sizes: 1 ⁄
2
" – 2" (15 – 50mm)
Series 719 Double Check Valve Assemblies are designed to pro-
tect drinking water supplies from dangerous cross-connections
in accordance with national plumbing codes and water authority
requirements.
This series may be used in only those cross-connections identified
by local inspection authorities as non-health hazard applications.
Check with local authority having jurisdiction regarding vertical
orientation, frequency of testing or other installation requirements.
Series 719 meets the requirements of ASSE Std. 1015 and AWWA
Std. C510.
Features
• Manufactured from bronze alloy
• Separate access, top entry check valve design
• Reversible seat disc rubber, extends check valve life
• Chloramine resistant elastomers
• Replaceable seats and seat discs
• Compact design
• Top mounted screwdriver slotted ball valve test cocks
• Low pressure drop
•
1 ⁄
2
" – 1" (15 – 25mm) have Tee handles
• No special tools required for servicing
• Plastic on plastic check guiding reduces potential binding due to
mineral deposits
Specifications
Series 719 Double Check Valve Assembly shall be installed
at each noted location. Provide assembly with integral shutoff
valves that conform to ASSE 1015 and AWWA C510. The assem-
bly shall have top entry bronze covered access points for each
check assembly, screw driver slotted test cocks and require the
use of no special tools for servicing. All wetted rubber parts shall be
manufactured from silicone or chloramine resistant EPDM rubber.
All valve seats and seat discs shall be replaceable. Seat discs shall
be reversible to extend check valve life. Check valve guiding shall
be plastic to plastic. The assembly shall be a Watts Series 719.
Test Cocks
First Check Assembly Second Check Assembly
719QT
For Non-Health Hazard Applications
ES-719
Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location ––––––––––––––––––––––––––––––––––––––––– Approval –––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. ––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative ––––––––––––––––––––––––––––––––––––––––
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.
NOTICE
Inquire with governing authorities for local installation requirements
Now Available
WattsBox Insulated Enclosures.
For more information, refer to literature ES-WB.