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

Classification：Relief valve

Trade names：



Bring spanner spring opening type relief valve a little
Classification of the products: Series of the relief valve

The detailed materials of the products:

This valve is suitable for equipment or pipeline of such medium as working temperature ≤ steam , air of 350 degrees Centigrade ,etc.. As exceeding pressing protectors. Connect the flange standard according to series 1 of JB/T-94.


Main spare part material

NO
Part name
Material
1
The valve has body
WCB
2
Valve seat
ZG2Cr13
3
Regulate and enclose
ZG2Cr13
4
Valve one
2Cr13
5
Lead set
2Cr13
6
The valve covering
ZG230-450
7
Spring
50CrVA
8
Valve stem
2Cr13
9
Spanner
ZG200-400
10
Adjust spiral shell's pole
45
11
Protect and cover
ZG200-400
Seal the surface material
" H " piles and welds D507, " Y " piles and welds the base hard alloy of Co

External dimension and size of connecting

Type
Nominal and open directly
do
D
K
g
g1
b
f
f1
Z-ød
DN'
D1
K1
g2
g'
b1
f'
f1'
Z1-ød1
L
L1
≈ H
A47H-16C
20
15
105
75
55
16
2
4-14
20
105
75
55
16
2
4-14
100
85
270
25
20
115
85
65
16
2
4-14
25
115
85
65
16
2
4-14
100
85
270
32
25
140
100
78
18
2
4-18
32
140
100
78
18
2
4-18
115
100
312
40
32
150
110
85
18
3
4-18
40
150
110
85
18
3
4-18
120
110
320
50
40
165
125
100
20
3
4-18
50
165
125
100
20
3
4-18
135
120
390
65
50
185
145
120
20
3
4-18
65
185
145
120
20
3
4-18
140
130
395
80
65
200
160
135
20
3
8-18
80
200
160
135
20
3
8-18
160
135
400
100
80
220
180
155
22
3
8-18
100
220
180
155
22
3
8-18
170
160
600
125
100
250
210
185
22
3
8-18
125
250
210
185
22
3
8-18
190
190
620
150
125
285
240
210
24
3
8-23
150
285
240
210
24
3
8-23
205
195
625
200
150
340
295
265
26
3
12-23
200
340
295
265
26
3
12-23
240
230
798
250
200
405
355
320
30
3
12-26
250
405
355
320
30
3
12-26
350
320
981
300
250
460
410
375
30
4
12-26
300
460
410
375
30
4
12-26
350
320
1005
A47H-25
20
15
105
75
55
16
2
4-14
20
105
75
55
16
2
4-14
100
85
270
25
20
115
85
65
16
2
4-14
25
115
85
65
16
2
4-14
100
85
270
32
25
140
100
78
18
2
4-18
32
140
100
78
18
2
4-18
115
100
312
40
32
150
110
85
18
3
4-18
40
150
110
85
18
3
4-18
120
110
320
50
40
165
125
100
20
3
4-18
50
165
125
100
20
3
4-18
135
120
390
65
50
185
145
120
22
3
8-18
65
185
145
120
20
3
4-18
140
130
395
80
65
200
160
135
24
3
8-18
80
200
160
135
20
3
8-18
160
135
400
100
80
230
190
160
24
3
8-23
100
220
180
155
20
3
8-18
170
160
600
125
100
270
220
188
28
3
8-26
125
250
210
185
22
3
8-18
190
190
620
150
125
300
250
218
30
3
8-26
150
285
240
210
24
3
8-23
205
195
625
200
150
360
310
278
34
3
12-26
200
340
295
265
26
3
12-23
240
230
798
250
200
425
370
332
36
3
12-30
250
405
355
320
30
3
12-26
350
320
981
300
250
485
430
390
40
4
16-30
300
460
410
375
30
4
12-26
350
320
1005
A47H-40
20
15
105
75
51
55
16
2
4
4-14
20
105
75
55
16
2
4-14
100
85
270
25
20
115
85
58
65
16
2
4
4-14
25
115
85
65
16
2
4-14
100
85
270
32
25
140
100
66
78
18
2
4
4-18
32
140
100
78
18
2
4-18
115
100
312
40
32
150
110
76
85
18
3
4
4-18
40
150
110
85
18
3
4-18
120
110
320
50
40
165
125
88
100
20
3
4
4-18
50
165
125
100
20
3
4-18
135
120
390
65
50
185
145
110
120
22
3
4
8-18
65
185
145
120
20
3
4-18
140
130
395
80
65
200
160
121
135
22
3
4
8-18
80
200
160
135
20
3
8-18
160
135
400
100
80
235
190
150
160
24
3
4.5
8-23
100
220
180
155
22
3
8-18
170
160
600
125
100
270
220
176
188
28
3
4.5
8-26
125
250
210
185
22
3
8-18
190
190
620
150
125
300
250
204
218
30
3
4.5
8-26
150
285
240
210
24
3
8-23
205
195
625
200
150
375
320
260
282
38
3
4.5
12-30
200
340
295
265
26
3
12-23
240
230
798
250
200
450
385
313
345
42
3
4.5
12-34
250
405
355
320
30
3
12-26
350
320
981
300
250
515
450
364
408
46
4
4.5
16-34
300
460
410
375
30
4
12-26
350
320
1005
A47H-64 A47Y-64
20
15
130
90
51
68
20
2
4
4-18
20
105
75
55
51
16
2
4
4-14
100
95
301
25
20
140
100
58
78
22
2
4
4-18
25
115
85
65
58
16
2
4
4-14
100
95
301
32
25
155
110
66
82
24
2
4
4-23
32
140
100
78
66
18
2
4
4-18
115
105
312
40
32
170
125
76
95
24
3
4
4-23
40
150
110
85
76
18
3
4
4-18
135
115
366
50
40
180
135
88
105
26
3
4
4-23
50
165
125
100
88
20
3
4
4-18
160
125
396
65
50
205
160
110
130
28
3
4
8-23
65
185
145
120
110
22
3
4
8-18
175
160
570
80
65
215
170
121
140
30
3
4
8-23
80
200
160
135
121
22
3
4
8-18
175
160
565
100
80
250
200
150
168
32
3
4.5
8-26
100
235
190
160
150
24
3
4.5
8-23
190
180
597
150
100
345
280
204
240
38
3
4.5
8-34
150
300
250
218
204
30
3
4.5
8-26
280
260
738
A47H-100 A47Y-100
20
15
130
90
51
68
22
2
4
4-18
20
105
75
55
51
16
2
4
4-14
100
95
301
25
20
140
100
58
78
24
2
4
4-18
25
115
85
65
58
16
2
4
4-14
100
95
301
32
25
155
110
66
82
24
2
4
4-23
32
140
100
78
66
18
2
4
4-18
115
105
312
40
32
170
125
76
95
26
3
4
4-23
40
150
110
85
76
18
3
4
4-18
135
115
366
50
40
195
145
88
112
28
3
4
4-26
50
165
125
100
88
20
3
4
4-18
160
125
396
65
50
220
170
110
138
32
3
4
8-26
65
185
145
120
110
22
3
4
8-18
175
160
570
80
65
230
180
121
148
34
3
4
8-26
80
200
160
135
121
22
3
4
8-18
175
160
565
100
80
265
210
150
172
38
3
4.5
8-30
100
235
190
160
150
24
3
4.5
8-23
190
180
597
150
100
355
290
204
250
46
3
4.5
12-34
150
300
250
218
204
30
3
4.5
8-26
280
260
738


　　　

 
       
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