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

Classification：Ammonia pneumatic valve

Trade names：



The ammonia uses the valve stop valve
Type of the products: J42B-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
J42B-25C
Cast steel
Bar alloy
Gather four Fluorine
Ethylene
Carbon steel
Gather four Fluorine
Ethylene
J42B-25P
Gray casting iron
Stainless steel
J42F-25C
Stainless steel
Polytetrafluoroethylene (PTFE)
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
65
90
60
40
35
16
2
4
4- φ 14
165
185
110
15
65
95
65
45
40
16
2
4
4- φ 14
165
185
110
20
75
105
75
55
51
18
2
4
4- φ 14
170
200
120
25
80
115
85
65
58
18
2
4
4- φ 14
197
210
120
32
90
135
100
78
66
20
2
4
4- φ 18
199
213
140
40
100
145
110
85
76
20
3
4
4- φ 18
248
264
160
50
115
160
125
100
88
22
3
4
4- φ 18
265
295
180
65
145
180
145
120
110
24
3
4
8- φ 18
310
349
220
80
155
195
160
135
121
26
3
4
8- φ 18
340
357
240
100
175
230
190
160
150
30
3
4.5
8- φ 23
380
413
280
125
200
270
220
188
176
32
3
4.5
8- φ 25
430
451
320
150
240
300
250
218
204
32
3
4.5
8- φ 25
505
492
360
200
300
360
310
278
260
34
3
4.5
12- φ 25
550
806
400
250
325
425
370
335
31
36
3
4.5
12- φ 30
730
880
450
300
375
485
430
390
364
40
3
4.5
16- φ 30
-
995
550


　　　

 
       
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