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Job Location
Engineer
Approval
91=_
MasterSeries® LF876V
Double Check Detector Backflow
Prevention Assemblies (Type II)
Size: 21/2" -10"
The FEBCO MasterSeries LF876V Double Check Detector
Assembly is specifically designed to protect against possible
backpressure and backsiphonage conditions for non -health
hazard (i.e., pollutant) application in accordance with Local
Governing Water Utility Code.
The coating on this backflow assembly uses ArmorTekTM technol-
ogy to resist corrosion due to microbial induced corrosion (MIC)
or exposed metal substrate. This Backflow Assembly is primarily
used on potable drinking water systems and fire sprinkler sys-
tems, where Local Governing Code mandates protection from
non -potable quality water being pumped or siphoned back into
the potable water system.
Features
Main Valve:
• Inline Serviceable Assembly
• Horizontal "N-Pattem" Installations
• Vertcal-Up "Z -Pattern" Installations
• No Special Tools Required for Servicing
• Captured Modular Spring Assembly
• Reversible &_Replaceable Discs
• Field Replaceable Seats
• Ductile Iron Valve Body Design
• Stainless Steel Check Components
• Utilizes advanced ArmorTekT" coating technology to resist cor-
rosion of intemals
• Winterization feature with disc retainers and valve body dran pats
• Clapper Check Assembly
• Commonality between 1 st & 2nd Check Components
• Captured O-ring Design
Auxiliary Bypass:
• Compact Bypass Design; Remains within Man Valve Assembly
Profile
• Inline Serviceable 3/4" Check Assembly
• No Special Tools Required for Servicing
• Field Replaceable Seat & Disc
• Detect Potential Underground Water Leaks
• Detect Unauthorized Water Usage
'The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.
Contractor
PORT BEACH FIRED'--"
Approval NEW
FIRE PREVENT luil
Contractor's P.O. No.
Representative
MAR n a
�4I) sr
Model LF876V Double Check Detector Assembly
Specifications
The FEBCO MasterSeries LF876V Double Check Detector Valve
Assembly shall be installed on the potable water supply and at
each point of cross -connection to protect against possible
baclgxessure and badusiphonage conditions for non -heath hazard
(.e., pollutant) applications. The assembly shall consist of a
main line valve body composed of two (2) independently acting
approved clapper style check modules with replaceable seats
and disc rubbers. Servicing of both check modules does not
require any special tools and are accessed through independent
top entry covers. This assembly shall be fitted with approved UU
FM inlet/outlet resilient seated shutoff valves and contain four (4)
properly located resilient seated test cocks as specified by AW WA
Standard C510. The auxiliary bypass line contains a %'50/4" Water
Mater that complies with ANSVAW WA Standard C700 coupled
with an approved check assembly. The bypass line is designed
to detect leaks or unauthorized water usage of the water system
while protecting against possible backpressure and bael iphonage
conditions for non -heath hazard (.e., pollutant) application. The
valve body shall utilize a coating system with buit-in electrochemi-
cal corrosion inhibitor and microbial inhibitor. The assembly shall
be approved for horizontal and/or vertical -up installations while
meeting the requirements of AW WA Standard C510 flow and
pressure loss performance parameters.
NOTICE
The information contained herein is not intended to replace the
full product installation and safety information available or the
experience of a trained product installer. You are required to
thoroughly read all installation instructions and product safety
information before beginning the installation of this product.
Inquire with governing authorities for local installation requirements
FEBCe prodLdspedficalim in U.S. c"Wmay units and metric are appmdmde and are Podded anN. For precis mwaaement%
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out pdarnoticeand willWincing are/ abfxptren to make suds daujos and MoOksaans on FEBCe pmductS Previa"slymNbWW nlyseld.
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A WATTS Brand
Performance
Flow capacity chart identifies valve performance based upon
rated water Velocity up to 20fps
• Maximum service flow rate is determined by maximum rated
Velocity of 7.5fps.
• AW WA Manual M-22 (Appendix q recommends that the
maximum water Velocity in the services be not more than 1 Ofps.
• UL flow rate is determined by typically rated Velocity of 15 feet/sec.
Capacity N -Pattern
2'k" LF876V
3
�a
t
Z-Pattem
0 25 60 75 100 125 150 175 200 725 250 275 300 315 3609Pm
284 563 852 1136 !pm
7.5 14.7 228 fps
3" LF876V
FEBCO0
shrWnd 0tlwpatimi1N4'm@m"
Fl C7 N
Pipe Support
&mmhW by customs
for vahm weight only.
Vntimaimlabon z-vaeem-
Rmcury z
6" LF876V
on Sewioe Row Fated Row '10. RaYd Row
10
7.5
145
22.0 Ips
4" LF876V
1 1 1
la
pd
Semon Flow
noted! Row
%L rated Row
18
400
16
14
m
12
_l -
E
10
4
z
6
0 180
100 300 400
500 1100
700 800gpm
379
1136
1893
2650 fpm
7.5
128
19.1 fps
FEBCO0
shrWnd 0tlwpatimi1N4'm@m"
Fl C7 N
Pipe Support
&mmhW by customs
for vahm weight only.
Vntimaimlabon z-vaeem-
Rmcury z
6" LF876V
on Sewioe Row Fated Row '10. RaYd Row
10
16
14
12
1 1 1
la
4
2
a
0 200
400
757
8• LB76V
PIN
to
16
14
12
0 0 10
wTs a
n� 6
4
2
0
fi00 800 1000 1200 1400 1800 ppm
2271 3785 5300 IPM
7.5 11A 178 fps
SeMer Row noted Flow `UL Raa4 fine,
a 400 8111) 1200 1680 20110 VUU ppm
1514 3028 4549 6057 7571 9085 Ipm
7.6 mis 188 fps
10" LF876V
Pd SmI. Raw RewEflne, `ULHWeIRow
7 I___ -l—_.—_—_ _
5 t --- 1-
3
2
U 0 1500 2000 2500 300D 3500 gpm
1892 3785 5678 7570 9463 11356 132481pm
7s 0.4 14.1 fps
A MMM Brand USA T (800) 767-1234 • F: (800) 788-4491 " FEBCOonline.com
Canada: T: (888) 208-8927 " F: (888) 479-2887 • FEBCOonline.ca
Latin America: T: (52) 55-4122-0138 • FEBCOonline.com
ES-F-LF876V 2015 0 2019 FEBCO
Dimensions - Weights
Size: 21h" -10"
Below are the nominal dimensions and physical weights for the Model LF876V size 2'h° through 10°. Allowances must be made for normal manufacturing tolerances.
Please visit our website to download a copy of this products installation instructions, or contact your local FEBOO Representative for more
information.
Model LF876V Standard Orientation (N -Pattern)
Note: The Series LF876V is shipped in the standard (N-Pattem)
orientation as shown above.
LF876V
Model LF876V Vertical Orientation (Z -Pattern)
Gate Valve
Side View
Clearance
Ph
2915 74012'h
318
61h 159
251/4 64217'h
445 13%
346
1 27'/4 692
5'h
140
1 11'h
283 1
3'h
89
163%
416
11'h
292
216
98
3
29'% 740
12'h
318
61/. 159
253/4 654 174/4
451 14'h
359
28%. 718
5'h
140
11''A
283
3%
95
187h
479
11'h
292
242
110
4
31'h 791
14
356
7 178
273/4 705 183/.
476 153h
394
31 787
6
152
11'%
283
4'h
114
22%
578
13
330
347
157
6
353/. 908
16
406
8 203
323/4 831 22'h
562 18%
473
37%4 946
7'/4
184
12'h
316
516
140
30'h
765
13
330
529
240
8
401/4 1035118%
470
9'/4 235
363/. 933 25'h
638 203/4
527
41'h 1054
8'h
216
14
356
63/4
172
371/4
959
14'h
368
827
375
10
46'/4 1175
21
533
107/is 264
413/6 1047 28'h
714 23116
601
473/81202
9518
244
15"As
398
8
203
453/.
1162
131/s
333
1335
606
Nates:
Indicates nominal dimensions with GSY Gets Valves (Full Open Position)
Indicates weight of complete Backflow Assemblies with specified Gate Valves
Options - Suffx
OSY UL/FM Approved OS&Y Gate Valves [ANSVAWWA
C515 Compliant]
DNRS: Domestic Non -Rising Stem Gate Valves [ANSVAWWA
C509 Compliant]
CFM: Totalizing Cubic feet/min %'x 3/4" Water Meter [ANSI/
AWWA C700 Compliant]
GPM: Totalizing Gdlons/min %"x %" Water Meter [ANSV
AWWA C700 Compliant]
LG: Less Shutoff valves; This is NOT an APPROVED
ASSEMBLY
Example Ordering Description:
4" LF876V-OSY-GPM - Valve Assembly fitted with OS&Y Shutoff
Valves & Gallons per Minute Water Meter
4" LF876V-OSY-CFM - Valve Assembly fitted with OS&Y Shutoff
Valves & Cubic Feet per Minute Water
Meter
Available Components
Wye Strainer. FDA Approved [ASME 816.1 Class 125 &
AWWA Class D Flange]
Series 611 Valve Setter. MJ x MJ - Mechanical Joint x Mechanical
Joint [AWWA C111/A21.11)
MJ x FL - Mechanical Joint x Flange
[AWWA C111/A21.11; ASME B16.1 Class
125/AWWA Class D Flange]
FL x FL — Flange x Flange
[ASME 816.1 Class 125 & AW WA Class
D Flange]
Materials
Below is a general materials list of the Model LF876V. All assemblies
size 21/2" through 10" is similar in materials and construction.
Please contact your local FEBCO Representative if you require
further information.
Main Valve Body: Ductile iron Grade 65-45-12
Coating:
Fusion epoxy coated internal and extemal
AWWA C550-90
Shutoff Valves:
OSY redlient wedge gate valve AWWA C51
NSM)
Check Seats:
Stainless Steel
Disc Holder:
Stainless Steel
Elastomer Disc:
Silicone
Spring:
F swro�
Stainless Steel
Clamp:
AWWA C606
Approvals — Standards:
• Approved by the Foundation for Cross -Connection Control
and Hydraulic Research at The University of Southern
Callomia [FCCCHR-USC]
• ASSE 1048 Listed
• —UL Classified [US & Canada]
• "FM Approved
• IAPMO/cUPC
• AWWA Standard C510 Compliant
• End Connections: Compliant to ASME B16.1 Class 125 &
AWWA Class D Flange
Assembly configured with UL/FM Approved OS&Y RW Gate
Valves. Less gate valve assemblies are not UL/FM approved
configurations.
Assembly Flow Orientation:
Horizontal (N -Pattern 2'h'— 101 - Approved by FCCCHR-USC,
ASSE, cULus, FM, IAPMO/cUPC
Vertical Up (Z -Pattern 21h" —10") - Approved by FCCCHR-USC,
ASSE, cUWs, FM, IAPMO/cUPC
"* �apSSfFr,�Q"
8FM c L us
C ® Approved
1045 859.5
Pressure - Temperature
Max. Working Pressure: 175psi (12.1 bar)
Min. Working Pressure: 10psi (0.7 bar)
Hydrostatic Test Pressure: 350psi (24.1 bar)
Hydrostatic Safety Pressure: 700psi (48.3 bar)
Temperature Range: 33°F -140°F [0.5C- 6o°C]
Continuous