Watts LFN9C User Manual
For Non-Health Hazard Applications
ES-LFN9
Job Name
Job Location
Engineer
Approval
LEAD FREE
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*
Series LFN9
Dual Check Vacuum Breakers
for In-Line Applications
Size 1⁄4" and 3⁄8" (8 and 10mm)
Series LFN9 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 Lead
Free* brass body construction. The LFN9 features Lead Free* construction to comply with Lead Free* installation requirements.
Models
LFN9C – same as LFN9 except comes with chrome body
Pressure-Temperature
Temperature Range: 33°F – 180°F (0.5°C – 82°C)
Maximum Working Pressure: 150psi (8.6 bar)
Applications
Series LFN9 should be installed on each parlor sink where a hose is
attached. This series is for use on continuous pressure applications.
Parlor Sinks
Standards
CSA B64.8
*The wetted surface of this product contacted by
consumable water contains less than 0.25% of
lead by weight.
Open End,
only outlet on fixture
Drain
3
⁄8" Mixed
Water
LFN9
Line
B
B1
Contractor
Approval
Contractor’s P.O. No.
Representative
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LFN9C
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
Flow
Dimensions — Weights
MODEL SIZE (DN) DIMENSIONS WEIGHT
A B B
A
in. mm in. mm in. mm in. mm lbs. kgs.
LFN9C 1⁄4 6 23⁄8 60 11⁄4 32 1 25 .38 .17
LFN9C
LFN9C
LFN9
LFN9
LFN9
3
⁄8 10 23⁄8 60 11⁄4 32 1 25 .38 .17
1
⁄2 15 21⁄16 52 11⁄4 32 11⁄4 32 .42 .19
1
⁄4 6 23⁄8 60 11⁄4 32 1 25 .38 .17
3
⁄8 10 23⁄8 60 11⁄4 32 1 25 .38 .17
1
⁄2 15 21⁄16 52 11⁄4 32 11⁄4 32 .42 .19
1
1
⁄4"
3
⁄8"
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-LFN9 1321 © 2013 Watts
A Watts Water Technologies Company
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