Backflow Preventers

Backflow Preventer
BA4760
Backflow Preventers
Technical Features
•Sizes available (Nominal): DN60/65/2½”, DN80/3”,
DN100/4”, DN150/6¼”, DN200/8½” and DN250/10”.
•Pressure data:
Maximum working pressure : 10 bar (175 psi)
•Maximum temperature: 65°C
•Connections : PN10/16 Flanges, see table
•Standards : EN 1717
•Installation : According to EN 1717
•Specification : Designed to protect drinking water
systems from contaminations by polluted liquids which
do not present toxic or microbiological risk to human
health as defined by health authorities.
3-zone composition, up, down and middle stream.
Backflow Preventer - BA4760
Part Number
Weights
(kg.)
149B3486
149B3097
149B3098
149B3400
149B3401
149B3402
25.0
2935
58.0
83.5
141.0
151.0
Backflow Preventer - BA4760
Materials
Specification
EN-GJL-250
EN-GJS-400.15
EN-GJL-250
EN-GJS-400.15
Pressure Loss Curve
25
20
200 250
150
2
80
DN
60-65
30
100
P
CuZN36Pb2As
CuSn5Zn5Pb5-C
X10CrNi18-8
1.6
1.4
1.2
15
1
10
.8
.7
8
7
6
.6
.5
Datasheet Created
CuSn5Zn5Pb5-C
X5CrNi18-10
CuZN36Pb2As
CuSn5Zn5Pb5-C
X5CrNi18-10
CuSn12-C
.4
5
4
3
.3
.25
.2
.1
Worldwide Fire Protection
Manufactured for Viking by Danfoss. Refer to Manufacturer’s datasheet. Specifications subject to change without notice.
20
30
15
40 50 60
20 25 30
80
40 50 60
80 100
200
300 400
600
1000
4000
15
8 10
2000
5 6
2500
3000
8 10
4
1000
5 6
3
1500
4
2
500
600
700
800
FLOW GALLON/MIN
1
400
DEBIT M3/H
200
1
www.vikinggroupinc.com
20-06-2014
2
X10CrNi18-8
EN-GJS-400.15
CuZn36Pb2
CuZn36Pb2As
CuSn5Zn5Pb5-C
X5CrNi18-10
F
180
200
255
310
390
390
250
300
Material
Cast Iron
Casing
Ductile Iron
Cast Iron
Cap
Ductile Iron
Membrane
EPDM
Brass
Closing System
Bronze
Rings
Stainless Steel
PPO
Closing System Seat
Bronze
Closing System Seat Stainless Steel
Brass
Drain Valve Stem
Bronze
Drain Valve Seat
Stainless Steel
Bronze
Drain Valve Head
POM
Drain Valve Guide PPO
Seal
EPDM
Spring
Stainless Steel
Flat Ring
EPDM
Funnel
Ductile Iron
Ball Valve
Brass
Brass
Stop Guide
Bronze
Disc
Stainless Steel
E
63
63
80
80
80
80
100
BA4760
Part
B
356
440
530
630
763
763
150
PN10/16
PN10/16
PN10/16
PN10/16
PN10
PN10
A
185
200
220
285
340
395
BAR
Flange
Physical Data
Dimensions (mm)
C
D
155
326
173
337
201
434
230
456
272
499
272
499
PSI
Nominal Pipe Size
Metric
inch
DN60/65
2½”
DN80
3”
DN100
4”
DN150
6”
DN200
8”
DN250
10”

Download Report