Ball valve  Series
Stop valve  Series
Relief valve  Series
Oxygen valve  Series
Filter  Series
Vacuum valve  Series
 
　

Classification：Stop valve

Trade names：



The ammonia uses the valve stop valve
Type of the products: J41B-25/C/Z/P

Major part material :

Part name
Valve body , valve covering
Seal and enclose
Packing
The packing pressing and covering
Valve stem
Spacer
J41B-25C
Cast steel
Bar alloy

Gather four Fluorine
Ethylene

Carbon steel

Gather four Fluorine
Ethylene

J41B-25Z
Gray casting iron
J41B-25P
Stainless steel
Stainless steel
J41F-25Z
Gray casting iron
Carbon steel

Performance norm:

Nominal pressure PN ( MPA)
Test pressure PS ( MPa)
Suitable medium
Suitable temperature ( Degrees Centigrade)
2.5
3.8
Ammonia,
Ammonia liquid ,etc.
NH3
Bar alloy
-40 degrees Centigrade
+150 degrees Centigrade
Four Fluorine
-40 degrees Centigrade
+200 degrees Centigrade
4.0
6.4


The main size and weight:

Nominal and open directly
DN( mm)
Size ( mm)
Weight
( kg)
L
D
D 1
D 2
D 4
b
f
f 1
Z- φ d
Close
Open
D 3
10
130
90
60
40
35
16
2
4
4- φ 14
165
185
110
15
130
95
65
45
40
16
2
4
4- φ 14
165
185
110
20
150
105
75
55
51
18
2
4
4- φ 14
170
200
120
25
160
115
85
65
58
18
2
4
4- φ 14
197
210
120
32
180
135
100
78
66
20
2
4
4- φ 18
199
213
140
40
200
145
110
85
76
20
3
4
4- φ 18
248
264
160
50
230
160
125
100
88
22
3
4
4- φ 18
265
295
180
65
290
180
145
120
110
24
3
4
8- φ 18
310
349
220
80
310
195
160
135
121
26
3
4
8- φ 18
340
357
240
100
350
230
190
160
150
30
3
4.5
8- φ 23
380
413
280
125
400
270
220
188
176
32
3
4.5
8- φ 25
430
451
320
150
480
300
250
218
204
32
3
4.5
8- φ 25
505
492
360
200
600
360
310
278
260
34
3
4.5
12- φ 25
550
806
400
250
650
425
370
335
31
36
3
4.5
12- φ 30
730
880
450
300
750
485
430
390
364
40
3
4.5
16- φ 30
-
995
550


　　　

 
       
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