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30
Valve Construction
PRESSURE RATINGS
SERIES
MAXIMUM PRESSURE RATINGS
CONNECTION
AWWA
Class
Headloss Chart
CWP
(psig)
2000 ANSI 125# Gray Iron Flange 150B 150
2100 AWWA MJ Gray Iron 150B 150
2200 ANSI 250# Ductile Iron Flange 250B 250
2300 AWWA MJ Ductile Iron 250B 250
2400 ANSI 125# Ductile Iron Flange 250B 250
2500 ANSI 125# Gray Iron Wafer 150B 150
2600 ANSI 125# FLG x MJ Gray Iron 150B 150
MATERIALS OF CONSTRUCTION
COMPONENT STANDARD OPTIONAL
150B Body
3”-72”
150B Body
78”-108”
250B Body
3”-108”
Disc
150B Shaft
3”-72”
150B Shaft
78”-108”
250B Shaft
3”-108”
Cast Iron ASTM
A126, Class B
Ductile Iron ASTM A536
Gr. 65-45-12
Ductile Iron ASTM A536
Gr. 65-45-12
Stainless Steel ASTM
A276 Type 304
Stainless Steel ASTM
A564 Type 630, H1150
Ductile Iron, Bronze
Stainless Steel
Steel
Bronze
Stainless Steel
Steel
Bronze
Stainless Steel
Steel
Stainless Steel
Type 316, Monel
Monel
Resilient Seat Buna-N EPDM, Viton
Body, Seat and
Hardware
Type 316 Stainless Steel Monel
Shaft Bearings
3” - 24”
Nylatron
Teflon, Bronze
Teflon-Lined,
Shaft Bearings Teflon-Lined, Fiberglass-
Stainless Steel or
30” and Larger Backed
Bronze Backed
Flow
Coefficients
Size Cv
3 380
4 590
6 1,430
8 2,750
10 4,300
12 6,550
14 8,350
16 11,800
18 15,000
20 18,600
24 27,000
30 42,000
36 61,900
42 87,100
48 114,000
54 144,000
60 180,000
66 221,000
72 266,500
78 316,000
84 366,000
90 420,500
96 478,500
102 540,000
108 605,500
HEADLOSS IN FEET OF WATER
10
8
7
6
5
4
3
2
1
.8
.7
.6
.5
.4
.3
.2
.1
.08
.07
.06
100
40
50
60
70
80
100
AMERICAN - BFV ®
BU T T E R F LY VA LV E
200
300
400
3”
200
500
600
700
800
1,000
4”
300
400
CUBIC METERS PER HOUR
2,000
500
600
700
800
6”
3,000
4,000
1,000
8”
10”
2,000
5,000
6,000
7,000
8,000
10,000
3,000
4,000
12”
14”
5 FEET/SECOND
VELOCITY
4 FEET/SECOND
VELOCITY
20,000
5,000
6,000
7,000
8,000
16”
18”
30,000
40,000
10,000
20,000
20 FEET/SECOND
VELOCITY
15 FEET/SECOND
VELOCITY
10 FEET/SECOND
VELOCITY
20”
24”
30”
50,000
60,000
70,000
80,000
36”
100,000
30,000
40,000
50,000
60,000
70,000
80,000
100,000
42” 54” 66”
48”
16 FEET/SECOND
VELOCITY
FLOW OF WATER IN GALLONS PER MINUTE
5
200,000
60”
10
300,000
400,000
15
84”
TYPICAL VALVE
SIZING RANGE
20
200,000
72” 96”
78”
90” 102”
108”
500,000
600,000
700,000
800,000
1,000,000
3
2
1
.8
.7
.6
.5
.4
.3
.2
.1
.08
.07
.06
.05
.04
.03
.02
METERS OF WATER
4