Model DCLF4AN LEAD FREE*
DOUBLE CHECK VALVE BACKFLOW PREVENTER
Job Name:
Job Location:
Engineer:
Tag:
Contractor:
P.O. Number:
Representative:
Wholesale Distributor:
SPECIFICATIONS
®
The 2 ½” – 12” Backflow Preventer shall be an Apollo
Model DCLF4AN Lead Free* Double Check Valve.
The assembly shall be manufactured in America and
®
factory warranty. The
carry a 5-year Apollo
TriForce center-stem guided check valves shall
feature reversible silicone rubber seat discs. The
check valves shall be held in place by drop-in retainers
(2 ½” – 6”) or SS studs & nuts (8” – 12”). Access to the
®
check valves shall be by an Apollo quick-connect SS
coupling (2 ½” – 6”) or grooved couplings (8” – 12”).
The bodies shall be SS in 2 ½” – 8” sizes and FDA
epoxy coated ductile iron in 10” & 12” sizes. The Lead
®
Free* Apollo domestic ball valve test cocks shall have
SS
handles.
The
assembly
shall
prevent
contamination of the potable water supply due to backsiphonage or backpressure from substances that are
non-health hazards. The pressure drop across the
assembly shall be documented by ASSE or USC
FCCC&HR Approval curves.
FEATURES
• Stainless steel body: 2 ½” – 8”
• FDA epoxy coated ductile iron body: 10” & 12”
• Easy maintenance – no special tools required
• Drop-in check retainers: 2 ½” – 6”
• Bolted-in checks: 8” – 12”
• Low pressure loss as documented by ASSE or USC
FCCC&HR Backflow Preventer approval agencies
• Center-stem guided TriForce check valves
• Small installation space required – small footprint
• Approved for n-flow
• US Patent Nos. 6,443,184; 7,025,085; 7,533,699
• MADE IN THE USA
PERFORMANCE RATING
Maximum Working Pressure 175 psi
Temperature Range 33 ° F – 140 ° F
Hydrostatic Test Pressure 350 psi
APPROVALS
Sizes 2 ½” – 12”: ASSE 1015, CSA B64.5, FM,
IAPMO, UL*, and cUL*,
*UL and cUL installations must include indicating-type shut-off
valves
* LEAD FREE: The wetted surfaces of this product shall contain no
more than 0.25% lead by weighted average. Complies with CA
AB1953, VT Act 193, MD HB372, LA HB471 and Federal Public Law
111-380.
ORDERING INFORMATION
4ANLF–1 X X – 0 X
Y-STRAINER
SIZE
SHUT-OFF VALVES
Y-STRAINER
r 0 – None (Standard)
r 1 – With Y-Strainer (Flanged only, shipped loose)
SIZE
r 9 – 2 ½”
r 0 – 3”
r A – 4”
r C – 6”
r E – 8”
r G – 10”
r H – 12”
SHUT-OFF VALVES (Inlet x Outlet)
r 1 – Less Shut-off Valves (see notes)
r 2 – NRS Flg x NRS Flg
r 3 – OS&Y Flg x OS&Y Flg
r 4 – OS&Y Flg x Monitored (Mon.) Butterfly Vlv Grv
r 6 – OS&Y Flg x Post Indicator Flg
r 7 – OS&Y Flg x OS&Y Grv
r 8 – OS&Y Grv x OS&Y Grv
r 9 – Mon. Butterfly Vlv Grv x Mon. Butterfly Vlv Grv
r 10 – OS&Y Flg x Post Indicator Grv
r 11 – NRS Grv x NRS Grv
r 12 – NRS Flg x NRS Grv
r 13 – Post Indicator Flg x Mon. Butterfly Vlv Grv
r 14 – Post Indicator Flg x Post Indicator Flg
r 16 – Mon. Butterfly Vlv Grv x Post Indicator Flg
r 17 – Post Indicator Flg x Mon. Butterfly Vlv Grv
r 18 – OS&Y Grv x Post Indicator Grv
r 19 – Mon. Butterfly Vlv Grv x Post Indicator Grv
r 20 – Post Indicator Flg x OS&Y Flg
Notes: Post Indicator options not available in 2 ½” size
Butterfly options not available in 12” size
Conbraco Industries, Inc. 701 Matthews Mint Hill Rd. Matthews NC 28105 USA; www.apollovalves.com; 704-841-6000
This specification is provided for reference only. Conbraco reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Conbraco products previously or subsequently sold.
SS1272 © 6/13 Page 1 of 4
Model DCLF4AN LEAD FREE*
DOUBLE CHECK VALVE BACKFLOW PREVENTER
DIMENSIONS (in.) – WEIGHTS (lbs.)
Size
A (Centerline to Centerline)
B (Gate Valves)
B (Butterfly Valves)
C (Gate Valves)
C (Butterfly Valves)
2 ½”
12 ½
24 ½
27 ½
19 ⅝
18 ¼
3”
12 ½
24 ½
27 ½
20
18 ½
4"
14
27
30 ¾
22 ½
20
6"
16
32
36
27 ¾
24 ¾
8"
18 ½
40 ¾
37 ⅜
32 ⅛
28 ½
10”
21
49
43
40
35
12”
26 ¾
55 ¾
N/A
44
N/A
D (Gate Valves)
D (Butterfly Valves)
E (OS&Y Open)
E (Butterfly Valves)
13
11 ½
19 ⅞
11 ½
13 ½
11 ¾
24 ¼
12 ⅛
14 ⅞
13 ¼
27 ¼
12 ⅞
18
15 ⅜
32 ¾
15 ⅞
21 ⅜
17 ⅞
44 ½
22 ¼
24 ¾
19 ¾
54
23 ⅛
28 ¾
N/A
62 ¾
N/A
E (NRS/PI)
F (OS&Y Open)
F (Butterfly Valves)
F (NRS/PI)
14 ⅞
16 ⅜
8
11 ⅜
16 ⅛
20 ½
8⅜
12 ⅜
19 ¼
22 ¾
9
14 ¾
24 ½
28
10 ⅞
19
29 ¼
37 ¾
12 ⅞
22 ½
36 ⅜
46
13 ½
26 ½
40
53 ⅛
N/A
30
G (Clearance needed for check removal)
H
I
Test Cocks (NPT)
6
30 ½
8
½”
6
31 ⅝
8¾
½”
6
36 ½
9½
½”
8
46 ⅜
12 ⅝
¾”
8½
53 ⅝
16 ⅜
¾”
12
66 ⅛
19
¾”
12
74 ⅛
22
¾”
Net Wt. (Less Valves)
Net Wt. (w/ Butterfly Valves)
30
57
30
60
39
84
74
142
305
436
785
963
910
N/A
Net Wt. (w/ NRS Gate Valves)
116
141
188
313
768
1431
2047
Net Wt. (w/ OS&Y Gate Valves)
126
151
194
323
782
1453
2101
Notes:
1. Nominal dimensions are
shown. Allowances must be
made for manufacturers’
tolerances.
2. Internal body connections
are grooved on 2 ½” – 10”
sizes.
3. Internal body connections
are flanged on 12” size.
4. Strainer option only
available for flanged-end
shut-off options.
Conbraco Industries, Inc. 701 Matthews Mint Hill Rd. Matthews NC 28105 USA; www.apollovalves.com; 704-841-6000
This specification is provided for reference only. Conbraco reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Conbraco products previously or subsequently sold.
SS1272 © 6/13 Page 2 of 4
Model DCLF4AN LEAD FREE*
DOUBLE CHECK VALVE BACKFLOW PREVENTER
FLOW CURVES
PRESSURE LOSS (PSI)
7.5
FT/S
(2-1/2")
7.5
FT/S
(3")
7.5
FT/S
(4")
METER RATED FLOW
20
3"
15
4"
2-1/2"
10
5
0
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
FLOWRATE (GPM)
7.5
FT/S
(6")
PRESSURE LOSS (PSI)
20
7.5
FT/S
(8")
METER RATED FLOW
6"
15
8"
10
5
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
FLOWRATE (GPM)
PRESSURE LOSS (PSI)
7.5
FT/S
(10")
7.5
FT/S
(12")
METER RATED FLOW
20
15
12"
10"
10
5
0
0
400
800
1200
1400
1800
2200
2600
3000
3400
3800
4200
FLOWRATE (GPM)
Notes:
1.
2.
3.
4.
Flow curves directly reflect data collected by an ASSE approved laboratory.
Flow curves shown were recorded with butterfly shut-off valves. Flow curves with gate valves are slightly lower. Contact
factory for more information.
All data points are based on ASSE increasing flow data, from zero GPM to Meter Rated Flow (opening curve).
For high flow rates/pressure loss information – contact factory.
DCLF4AN MATERIAL SPECIFICATIONS
Part Name
Body (2 ½” – 8”)
Body (10” & 12”)
Covers (2 ½” – 6”)
Cover (8”)
Covers (10” & 12”)
Check Valves (2 ½” – 12”)
Springs
Seat Discs
Test Cocks
Material
Stainless Steel
FDA Epoxy Coated Ductile Iron
Glass-filled PPO/Stainless steel
Stainless Steel
FDA Epoxy Coated Ductile Iron
Glass-filled PPO/Bronze (C89836 Lead Free*)/Stainless Steel
Stainless Steel
Chloramine-resistant Silicone
Bronze (C89836 Lead Free*) With Stainless Steel handles
Conbraco Industries, Inc. 701 Matthews Mint Hill Rd. Matthews NC 28105 USA; www.apollovalves.com; 704-841-6000
This specification is provided for reference only. Conbraco reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Conbraco products previously or subsequently sold.
SS1272 © 6/13 Page 3 of 4
4600
Model DCLF4AN LEAD FREE*
DOUBLE CHECK VALVE BACKFLOW PREVENTER
OPTIONAL VALVE SETTERS – Ordered Separately
(See SS1174 Submittal Sheet for details)
4 A N – 0 0 X – X
SIZE
r 9 – 2 ½”
r 0 – 3”
r A – 4”
r C – 6”
r E – 8”
r G – 10”
SIZE
r H – 12”
TYPE
TYPE
r F – Flange x Flange
r MJF – Mechanical Joint X Flange
r MJ – Mech. Joint X Mech. Joint
Mechanical Joint X Flange Setter (Model MJFS)
Flange X Flange Setter (Model FS)
Mechanical Joint X Mechanical Joint Setter (Model MJS)
Conbraco Industries, Inc. 701 Matthews Mint Hill Rd. Matthews NC 28105 USA; www.apollovalves.com; 704-841-6000
This specification is provided for reference only. Conbraco reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Conbraco products previously or subsequently sold.
SS1272 © 6/13 Page 4 of 4