¡¡¡¡¡ô MARINE FLANGED CAST-STEEL(BRONZE)VALVES
  
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¡¾ GENERAL ¡¿

¡¡¡¡Marine flanged cast-steel(bronze)valves are used for piping system of F.W.,L.O.,F.O.and temperature of steam t¡Ü300¡æ.
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¡¾ PARAMETER LIST ¡¿

TYPE Nominal Pressure PN(MPa) Nominal Diameter DN Appropriate Mediator
shut-off & non-return valves
2.5
20-150

F.W.,L.O.,F.O.temperature of steam t¡Ü300¡æ.

shut-off valves
2.5
20-150
F.W.,L.O.,F.O.temperature of steam t¡Ü300¡æ.

¡¾ TYPE AND MARK FOR EXAMPLE ¡¿

¡¡¡¡1¡¢TYPE
¡¡¡¡¡¡ A¡ª¡ªStraightway Valve
¡¡¡¡¡¡ B¡ª¡ªRight-angle Valve
¡¡¡¡2¡¢Mark for example
¡¡¡¡ ¡¡Straightway shut-off & non-return valve of PN 2.5 MPa and DN50 is expressed as£º
¡¡¡¡¡¡ Shut-off & non-return valves A25050 GB11688-89
¡¡¡¡¡¡ Right-angle shut-off valve of PN 2.5 MPa and DN50 is expressed as
¡¡¡¡¡¡ Shut-off valves B25050 GB11689-89
¡¡¡¡¡¡ Straightway non-return valve of PN 2.5 MPa and DN50 is expressed as£º
¡¡¡¡¡¡ Non-return valve A25050 GB11690-89

¡¾ STRUCTURAL DIMENSION ¡¿

¡¡A¡¢Structural Dimension of shut-off valve show as fig1.fig2 and table 1


FIG.1 A TYPE


FIG.2 B TYPE

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡£¨TABLE¡¡1£©
Nominal Pressure PN(Mpa)
Nominal Diameter DN
Structural Dimension
Flange
Bolt
Hand Wheel
Lift Range
Quality (kg)
L
H
A
B
A
B
D
D1
D2
d
b
n
Th
Do
S
m
A
B
2.5
12
130
95
217
203
95
65
47
14
14
4
M12
80
8
7
4.80
4.70
20
150
95
217
203
105
75
58
14
16
4
M12
80
8
7
5.00
7.90
25
160
100
217
203
115
85
68
14
16
4
M12
80
8
7
5.60
5.50
32
180
105
236
216
140
100
78
18
18
4
M16
100
9
9
7.40
6.70
40
200
115
260
236
150
110
88
18
18
4
M16
120
11
11
9.70
8.90
50
230
125
288
258
165
125
102
18
20
4
M16
140
12
14
13.8
12.7
65
290
145
335
301
185
145
122
18
22
8
M16
160
14
17
19.8
17.8
80
310
155
366
325
200
160
133
18
24
8
M16
200
17
20
25.8
22.8
100
350
175
427
378
235
190
158
22
24
8
M20
250
22
25
35.7
32.1
125
400
200
493
432
270
220
184
26
26
8
M24
280
24
32
60.3
56.0
150
480
225
556
484
300
250
212
26
28
8
M24
320
27
38
82.2
73.6

¡¡B¡¢Structural dimension of shut off & non return valve shown as fig3.fig4 and table 2



FIG.3 A TYPE


FIG.4 B TYPE

Nominal Pressure PN(Mpa)
Nominal Diameter DN
Structural Dimension
Flange
Bolt
Hand Wheel
Lift Range
Quality (kg)
L
H
A
B
A
B
D
D1
D2
d
b
n
Th
Do
S
m
A
B
2.5
15
130
95
217
203
95
65
47
14
14
4
M12
80
8
7
4.80
4.70
20
150
95
217
203
105
75
58
14
16
4
M12
80
8
7
5.00
7.90
25
160
100
217
203
115
85
68
14
16
4
M12
80
8
7
5.60
5.50
32
180
105
236
216
140
100
78
18
18
4
M16
100
9
9
7.40
6.70
40
200
115
260
236
150
110
88
18
18
4
M16
120
11
11
9.70
8.90
50
230
125
288
258
165
125
102
18
20
4
M16
140
12
14
13.8
12.7
65
290
145
335
301
185
145
122
18
22
8
M16
160
14
17
19.8
17.8
80
310
155
366
325
200
160
133
18
24
8
M16
200
17
20
25.8
22.8
100
350
175
427
378
235
190
158
22
24
8
M20
250
22
25
35.7
32.1
125
400
200
493
432
270
220
184
26
26
8
M24
280
24
32
60.3
56.0
150
480
225
556
484
300
250
212
26
28
8
M24
320
27
38
82.2
73.6