Watts N9C User Manual
For Non-Health Hazard Applications
ES-N9
Job Name
Job Location
Engineer
Approval
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Series N9
Dual Check Vacuum Breakers
for In-Line Applications
Size 1⁄4" and 3⁄8" (8 and 10mm)
Series N9 Dual Check Vacuum Breakers for In-Line Applications
are used for continuous pressure, non-health hazard, applications.
These valves have NPT female inlet and outlet connection and
brass body construction.
Models
N9C – same as N9 except comes with chrome body
Pressure-Temperature
Temperature Range: 33°F – 180°F (5°C – 82°C)
Maximum Working Pressure: 150psi (10.3 bar)
Applications
Series N9 should be installed on each parlor sink where a hose is
attached. This series is for use on continuous pressure applications.
Parlor Sinks
Open End,
only outlet on fixture
Drain
3
⁄8" Mixed
Water
Line
N9
Contractor
Approval
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Contractor’s P.O. No.
Representative
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Capacity
kPa psi
345 50
310 45
276 40
241 35
207 30
172 25
138 20
Pressure Drop
103 15
69 10
35 5
0 0
0 1 2 3 4 5 6 7 gpm
0 3.8 7.6 11 15 19 23 27 lpm
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N9
1
⁄4"
3
⁄8"
Flow
B
Dimensions — Weights
MODEL SIZE (DN) DIMENSIONS WEIGHT
in. mm in. mm in. mm in. mm lbs. kgs.
N9C1⁄4 6 23⁄8 60 11⁄4 32 1 25 .38 .17
3
N9C
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 without prior notice and without incurring any obligation to make such changes and modifications
on Watts products previously or subsequently sold.
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
ES-N9 1322 © 2013 Watts
⁄8 10 23⁄8 60 11⁄4 32 1 25 .38 .17
1
⁄4 6 23⁄8 60 11⁄4 32 1 25 .38 .17
N9
3
⁄8 10 23⁄8 60 11⁄4 32 1 25 .38 .17
N9
A B B1
B1
A
A Watts Water Technologies Company
Standards
CSA B64.8
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