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Special shut-off valve J41b for liquid ammonia
Valve brand: Shanghai Shuangheng Valve model: J41b Valve size: DN25~DN450 Medium temperature: -196 ℃~450 ℃ Environmental temperature: Working pressure
Product details
J41BAmmonia shut-off valveStructural characteristics and applications
1. The flange of Zhongtong is a square structure, and the valve stem is connected by a connecting rod.
2. The sealing surface of the valve body adopts a spherical convex shape, which is sealed with a line matching the valve foot.
3. The sealing surface is made of Babbitt alloy, which has good sealing performance and long service life
Main performance specifications
Applicable media: liquid, gas, ammonia, nitrogen, hydrogen
Applicable temperature:- 196℃-150℃
test pressure
|
Nominal pressure PN (MPa)
|
Test pressure (MPa)
|
|
|
Shell strength test
|
Sealing test
|
|
|
1.6
|
2.4
|
1.76
|
|
2.5
|
3.75
|
2.75
|
Material for main parts
|
product type
|
Part name
|
|||||
|
Valve body and valve cover
|
valve stem
|
filler
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Sealing surface
|
shim
|
fastener
|
|
|
J41B-16/25C
|
cast steel
|
carbon steel
|
PTFE
|
Ba Di alloy
|
asbestos rubber sheet
|
High quality carbon steel
|
|
J41B-16/25Q
|
nodular cast iron
|
carbon steel
|
PTFE
|
Babbitt alloy
|
asbestos rubber sheet
|
High quality carbon steel
|
|
J41B-16/25K
|
malleable iron
|
carbon steel
|
PTFE
|
Babbitt alloy
|
asbestos rubber sheet
|
High quality carbon steel
|
Main dimension table
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Nominal Diameter
DN(mm) |
Main external dimensions and connection dimensions (mm)
|
||||||||||
|
L
|
D
|
D1
|
D2
|
D6
|
b
|
f
|
f2
|
z-d
|
H
|
DO
|
|
|
J41B-16C J41B-16Q J41B-16K
|
|||||||||||
|
10
|
130
|
90
|
60
|
40
|
35
|
14
|
2
|
4
|
4-14
|
196
|
120
|
|
15
|
130
|
95
|
65
|
45
|
40
|
14
|
2
|
4
|
4-14
|
196
|
120
|
|
20
|
150
|
105
|
75
|
55
|
51
|
16
|
2
|
4
|
4-14
|
196
|
140
|
|
25
|
160
|
115
|
85
|
65
|
58
|
16
|
2
|
4
|
4-14
|
204
|
160
|
|
32
|
180
|
135
|
100
|
78
|
66
|
18
|
2
|
4
|
4-18
|
208
|
160
|
|
40
|
200
|
145
|
110
|
85
|
76
|
18
|
3
|
4
|
4-18
|
248
|
200
|
|
50
|
230
|
160
|
125
|
100
|
88
|
20
|
3
|
4
|
4-18
|
248
|
200
|
|
65
|
290
|
180
|
145
|
125
|
110
|
22
|
3
|
4
|
4-18
|
321
|
240
|
|
80
|
310
|
195
|
160
|
135
|
121
|
24
|
3
|
4
|
8-18
|
325
|
240
|
|
100
|
350
|
215
|
180
|
155
|
150
|
24
|
3
|
4.5
|
8-18
|
371
|
280
|
|
125
|
400
|
245
|
210
|
185
|
176
|
26
|
3
|
4.5
|
8-18
|
400
|
320
|
|
150
|
480
|
280
|
240
|
210
|
204
|
26
|
3
|
4.5
|
8-23
|
432
|
320
|
|
200
|
600
|
335
|
295
|
265
|
260
|
30
|
3
|
4.5
|
12-23
|
654
|
400
|
|
250
|
650
|
405
|
335
|
320
|
313
|
32
|
3
|
4.5
|
12-25
|
745
|
500
|
|
300
|
700
|
460
|
410
|
375
|
364
|
34
|
3
|
4.5
|
12-25
|
852
|
600
|
|
J41B-25C J41B-25Q J41B-25K
|
|||||||||||
|
10
|
130
|
90
|
60
|
40
|
35
|
16
|
2
|
4
|
4-14
|
196
|
120
|
|
15
|
130
|
95
|
65
|
45
|
40
|
16
|
2
|
4
|
4-14
|
196
|
120
|
|
20
|
150
|
105
|
75
|
55
|
51
|
16
|
2
|
4
|
4-14
|
196
|
120
|
|
25
|
160
|
115
|
85
|
65
|
58
|
18
|
2
|
d
|
4-14
|
201
|
120
|
|
32
|
180
|
135
|
100
|
78
|
66
|
18
|
2
|
4
|
4-18
|
208
|
120
|
|
40
|
200
|
145
|
110
|
85
|
76
|
20
|
2
|
d
|
4-18
|
248
|
160
|
|
50
|
230
|
160
|
125
|
100
|
88
|
20
|
3
|
4
|
4-18
|
248
|
160
|
|
65
|
290
|
180
|
145
|
125
|
110
|
22
|
3
|
4
|
8-18
|
321
|
240
|
|
80
|
310
|
195
|
160
|
135
|
121
|
24
|
3
|
4
|
8-18
|
325
|
240
|
|
100
|
350
|
230
|
190
|
160
|
150
|
24
|
3
|
4.5
|
8-23
|
371
|
280
|
|
125
|
400
|
270
|
220
|
188
|
176
|
30
|
3
|
4.5
|
8-25
|
400
|
320
|
|
150
|
480
|
300
|
250
|
218
|
204
|
30
|
3
|
4.5
|
8-25
|
432
|
320
|
|
200
|
600
|
360
|
310
|
278
|
260
|
34
|
3
|
4.5
|
12-30
|
654
|
400
|
|
250
|
650
|
425
|
370
|
332
|
313
|
42
|
3
|
4.5
|
12-34
|
745
|
500
|
|
300
|
750
|
485
|
430
|
390
|
364
|
46
|
3
|
4.5
|
12-34
|
852
|
600
|
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