Lined Valves
Accessories
Fig. 071 45° Ball Check Valve
The unique construction of the Tufline 45° ball check valve permits unobstructed flow through the
valve as the ball rides in a 45° guide, out of the path of the media. The valve provides a large Cv
coefficient. A tight seal against backflow is assured. It can be mounted horizontally or
vertically with upward flow.
FEP or PFA Liner
Sizes 1" thru 4"
ANSI Class 150
Materials of construction
Body
PFA lined ductile iron
Cover
Ductile iron
Diaphragm
PTFE
Ball
Glass-filled PTFE
Cover bolts
B7 Carbon Steel
Dimensions
(inches)
Allowable leakage rate @80 psi
Approximate pressure (psi) to unseat (
P)
Approximate pressure (psi) to seat (
P)
back pressure (psi) to seal
(
P)
Size
A
B
C
D
E
F
G
H
N
O
P
CV
Wt. lbs.
Horiz. pipe.
Vert. pipe.
Horiz. pipe.
Vert. pipe.
1
4.25
2.00
6.00
.44
3.50
.13
.88
.78
4
.63
3.13
23
8
30 bubbles/min.
0
Less
than
1
psi
10
0
50
1-1/2
5.00
2.88
7.00
.56
4.00
.13
1.25
1.13
4
.63
3.88
54
13
30 bubbles/min.
0
20
0
50
2
6.00
3.63
8.69
.63
5.25
.13
1.63
1.63
4
.75
4.75
87
23
60 bubbles/min.
0
30
0
50
3
7.50
5.00
10.00
.75
6.38
.15
2.50
2.25
4
.75
6.00
222
42
60 bubbles/min.
0
50
0
50
4
9.00
6.18
13.78
.75
8.86
.27
3.74
3.70
8
.75
9.00
525
52
60 bubbles/min.
0
55
0
50
N: number of bolt holes O: diameter of bolt holes P: diameter of bolt circle
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Page Last Updated: May 13, 2005
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