Product Overview

For Light Commercial and Residential Applications
ES-7
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Series 7
Dual Check Valves
7 Sizes:
1
⁄2" – 1
1
⁄4" (15 – 32mm)
7C Sizes:
3
⁄8" (10mm)
Series 7 Dual Check Valves are designed for non-health
hazard residential water system containment and continuous
pressure applications, such as the drinking water supply
service entrance or individual outlets. Series 7 uses two
compact replaceable check modules and is installed imme-
diately downstream of the residential water meter.
Features
• Can be installed vertically or horizontally
• Available with combination of inlet/outlet sizes, types or
thread and end connection including retrofit compression
fittings and hose connections
• Can be installed in many piping configurations and with a
wide range of meter horns, copper setters and meter boxes
• 7C, chrome-nickel plated brass dual check for in-line
continuous pressure application
Specifications
The dual check backflow preventer shall meet the domestic
requirements of ANSI/ASSE Standard 1024, and bear the
seal of approval. It shall be bronze-bodied and include not
less than one union, with the union nut drilled to accept a
tamper-proofing lock wire. A brass identification tag indicat-
ing direction of flow shall be securely attached to the valve
body by corrosion-resistant mechanical fasteners. The dual
check shall be Watts Regulator Company Series 7. (Please
select the model best suited to your application.)
Pressure - Temperature
Temperature Range: 33˚F – 180˚F (0.5˚C-82˚C) continuous
Maximum Working Pressure: 150psi (10.3 bar)
Approvals
7
1024
B64.6
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.
Series 7: Inlet/Outlet Connections – Types available, ordering code, sizes available.
Connection Connection Sizes Available
Type Code inches mm
National Pipe Thread Female 2
1
⁄2,
3
⁄4, 1 15, 20, 25
National Pipe Thread Male 3
1
⁄2,
3
⁄4, 1, 1
1
⁄4 15, 20, 25, 32
Meter Thread Female* 4
3
⁄4, 1, 1
1
⁄4 20, 25, 32
Meter Thread Male* 5
3
⁄4, 1, 1
1
⁄4 20, 25, 32
Pack Joint Female 6
3
⁄4, 1 20, 25
Pack Joint Male 7
3
⁄4, 1 20, 25
Female Solder 8
3
⁄4, 1 20, 25
Male Sweat 9
3
⁄4, 1 20, 25
Female Meter Thread (Swivel) 10
3
⁄4, 1, 1
1
⁄4 20, 25, 32
Male Hose Thread 11
3
⁄4 20
Female Hose Thread 12
3
⁄4 20
Male Meter Yoke Thread 13
3
⁄4 20
PEX 15
1
⁄2,
3
⁄4, 1 15, 20, 25
CPVC 16
1
⁄2,
3
⁄4, 1 15, 20, 25
QC "Quick Connect" 17
1
⁄2,
3
⁄4, 1 15, 20, 25
* When ordering Series 7 Valves with Meter Thread
Connections, be sure to order connection size one size
larger than meter thread. Examples:
Meter Size Order
1
⁄2" (15mm) and
5
⁄8" (16mm)
3
⁄4" (20mm)
5
⁄8" (16mm) and
3
⁄4" (20mm) 1" (25mm)
1" (25mm) 1
1
⁄4" (32mm)
Union (U) Connections available on all inlet/outlet types and sizes.
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