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Double-Flap Check Valve0 pages
S
1
2
3
4
5
6
7
Body
Flap
Shaft
Bolt
Spring
Seal
Bush
DCV
Double-Flap
Valve
Check
MEASUREMENTS
mm.
1
2
3
4
5
6
7
inch.
1 1/2”
2”
2 1/2”
3”
4”
5”
6”
8”
10”
12”
14”
16”
18”
20”
24”
28”
32”
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
Body
Flap
Shaft
Bolt
Spring
Seal
Bush
No.
Materials
1
CAST IRON
DUCTILE IRON
BRONZE
STAINLESS STEEL
STAINLESS STEEL
STAINLESS STEEL
STEEL
STAINLESS STEEL
BUNA-N RUBBER
EPDM RUBBER
TEFLON
2
3
4
5
6
7
A
78
98
110
128
160
192
218
275
334
384
438
489
538
555
C
B
R
Ordering guide:
A
C
B
R
Weight (Kg.)
78
98
110
128
160
192
218
275
334
384
438
489
55
66
80
100
112
135
160
210
260
310
360
410
450
505
624
720
625
44
43
45
64
64
70
76
88
114
114
127
140
152
152
178
229
241
25.5
28.8
35.1
43.4
52.5
65.7
78.5
104.4
127
148.3
172.4
187.4
217.8
241
295.4
354
403.8
1.2
1.5
2.4
3.6
5.7
7.3
9.0
17
26
42
55
75
538
555
584
680
800
930
101
107
111
172
218
314
STANDARDS
JIS
ASTM
FC20
FCD45
FC6
SCS13
SCS14
SUS304
SCM3
SUS304
A126classB
A536
B62
A351CF8
A351CF8M
A182F304
A182F304
N.B.R
SST 304
SST 316
0-80 C (32-176 F)
(EPT) 0-120 C
Weight (Kg.)
55
44
25.5
1.2
Example: 8” valve, Cast Iron body, SST304 ap, NBR seal
66
43
1.5
2.4 S4
100
64
43.4
3.6
Size
Flap
112
64 Body material
52.5
5.7 material
1.5
Br=
135 - 32” 70 C= Cast iron
65.7
7.3 Bronze
D= Ductile iron
S4=
160
76
78.5
9.0 SST304
S6=
210
88
104.4
17 SST316
260
114
127
26
310
114
148.3
42
O
C
360R O T 127 O N T R O L V A L V E S •
172.4
55
410
140
187.4
75
101
450
152
217.8
107
DCV - 8 45
80
D
28.8
C
35.1
-
-
N
Seal material
N= NBR
E= EPDM
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