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

Classification：Relief valve

Trade names：



The spring opens the closed relief valve completely
Classification of the products: Series of the relief valve

The detailed materials of the products:

A42Y-C type is suitable for the equipment and pipeline of such medium as 300 degrees Centigrade of air of ≤ of working temperature , oil gas , liquid ,etc.. A42Y-P type and A42Y-R type are suitable for the equipment and pipeline of 200 degrees Centigrade of medium with corrosivity of ≤ of working temperature, as exceeding pressing protectors.
Connect the flange standard and press JB/T -94 series 1. ≥ 6.4MPa presses JB/T -94 series 2.


Main spare part material

NO.
Part name
A42Y-C/KA42Y-C material
A42Y-P/KA42Y-P material
A42Y-R material
DA42Y-P material
1
Valve seat
2Cr13/1Cr18Ni9Ti
ZG1Cr18Ni9Ti
ZG1Cr18Ni12Mo2Ti
ZG1Cr18Ni9Ti
2
The valve has body
WCB
ZG1Cr18Ni9Ti
ZG1Cr18Ni12Mo2Ti
LCB/ZG1Cr18Ni9Ti
3
Regulate and enclose
2Cr13/1Cr18Ni9Ti
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
1Cr18Ni9Ti
4
Recoil plate
2Cr13/1Cr18Ni9Ti
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
1Cr18Ni9Ti
5
Valve one
2Cr13/1Cr18Ni9Ti
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
1Cr18Ni9Ti
6
Lead set
2Cr13/1Cr18Ni9Ti
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
1Cr18Ni9Ti
7
The valve covering
ZG230-450
ZG230-450
ZG230-450
ZG1Cr18Ni9Ti
8
Spring
50CrVA
50CrVA wraps up and covers the fluoroplastics
50CrVA wraps up and covers the fluoroplastics
50CrVA
9
Valve stem
2Cr13
1Cr18Ni9Ti/1Cr18Ni12Mo2Ti
1Cr18Ni9Ti/1Cr18Ni12Mo2Ti
1Cr18Ni9Ti
10
Adjust spiral shell's pole
45
2Cr13
2Cr13
2Cr13
11
Valve cap
ZG200-400
ZG200-400
ZG200-400
ZG230-450
Seal the surface material
Pile and weld 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
g3
g2
b1
f'
f1'
Z1-ød1
L
L1
≈ H
A42Y-16C
A42Y-16P
A42Y-16R
KA42Y-16C DA42Y-16C(P)
20
15
105
75
55
16
2
4-14
25
115
85
65
16
2
4-14
110
95
378
25
16
115
85
65
16
2
4-14
32
140
100
78
18
2
4-18
110
95
378
32
20
140
100
78
18
2
4-18
40
150
110
85
18
3
4-18
115
100
378
40
25
150
110
85
18
3
4-18
50
165
125
100
20
3
4-18
120
110
406
50
32
165
125
100
20
3
4-18
65
185
145
120
20
3
4-18
135
120
450
65
40
185
145
120
20
3
4-18
80
200
160
135
20
3
8-18
160
140
520
80
50
200
160
135
20
3
8-18
100
220
180
155
22
3
8-18
170
135
525
100
65
220
180
155
22
3
8-18
125
250
210
185
22
3
8-18
195
175
690
125
80
250
210
185
22
3
8-18
150
285
240
210
24
3
8-23
210
190
780
150
100
285
240
210
24
3
8-23
175
310
270
240
26
3
8-23
255
230
838
200
125
340
295
265
26
3
12-23
250
405
355
320
30
3
12-26
300
260
992
250
150
405
355
320
30
3
12-26
300
460
410
375
30
4
12-26
350
320
1266
300
220
460
410
375
30
4
12-26
400
580
525
485
36
4
16-30
370
350
1283
350
250
520
470
435
34
4
16-26
500
715
650
608
44
4
20-34
500
450
1520
400
280
580
525
485
36
4
16-30
500
715
650
608
44
4
20-34
500
450
1530
A42Y-25C
A42Y-25P
A42Y-25R
KA42Y-25C DA42Y-25(P)
20
15
105
75
55
16
2
4-14
25
115
85
65
16
2
4-14
110
95
378
25
16
115
85
65
16
2
4-14
32
140
100
78
18
2
4-18
110
95
378
32
20
140
100
78
18
2
4-18
40
150
110
85
18
3
4-18
115
100
378
40
25
150
110
85
18
3
4-18
50
165
125
100
20
3
4-18
120
110
406
50
32
165
125
100
20
3
4-18
65
185
145
120
20
3
4-18
135
120
450
65
40
185
145
120
22
3
8-18
80
200
160
135
20
3
8-18
160
140
520
80
50
200
160
135
22
3
8-18
100
220
180
155
22
3
8-18
170
135
525
100
65
230
190
160
24
3
8-23
125
250
210
185
22
3
8-18
195
175
690
125
80
270
220
188
28
3
8-26
150
285
240
210
24
3
8-23
210
190
780
150
100
300
250
218
30
3
8-26
175
310
270
240
26
3
8-23
255
230
838
200
125
360
310
278
34
3
12-26
250
405
355
320
30
3
12-26
300
260
992
250
150
425
370
332
36
3
12-30
300
460
410
375
30
4
12-26
350
320
1266
300
220
485
430
390
40
4
16-30
400
580
525
485
36
4
16-30
370
350
1283
A42Y-40C A42Y-40P A42Y-40R KA42Y-40C DA42Y-40(P)
20
15
105
75
51
55
16
2
4
4-14
25
115
85
65
16
2
4-14
110
95
378
25
16
115
85
58
65
16
2
4
4-14
32
140
100
78
18
2
4-18
110
95
378
32
20
140
100
66
78
18
2
4
4-18
40
150
110
85
18
3
4-18
115
100
378
40
25
150
110
76
85
18
3
4
4-18
50
165
125
100
20
3
4-18
120
110
406
50
32
165
125
88
100
20
3
4
4-18
65
185
145
120
20
3
4-18
135
120
450
65
40
185
145
110
120
22
3
4
8-18
80
200
160
135
20
3
8-18
160
140
520
80
50
200
160
121
135
22
3
4
8-18
100
220
180
155
22
3
8-18
170
135
525
100
65
235
190
150
160
24
3
4.5
8-23
125
250
210
185
22
3
8-18
195
175
690
125
80
270
220
176
188
28
3
4.5
8-26
150
285
240
210
24
3
8-23
210
190
780
150
100
300
250
204
218
30
3
4.5
8-26
175
310
270
240
26
3
8-23
255
230
838
200
125
375
320
260
282
38
3
4.5
12-30
250
405
355
320
30
3
12-26
300
260
992
250
150
450
385
313
345
42
3
4.5
12-34
300
460
410
375
30
4
12-26
350
320
1266
A42Y-64
A42Y-64P
A42Y-64R
DA42Y-64(P)
20
10
125
90
51
68
22
2
4
4-18
25
115
85
58
65
16
2
4
4-14
96
85
264
25
16
140
100
58
78
22
2
4
4-18
32
140
100
66
78
18
2
4
4-18
110
100
277
32
20
155
110
66
82
24
2
4
4-23
40
150
110
76
85
18
3
4
4-18
130
110
289
40
25
170
125
76
95
24
3
4
4-23
50
165
125
88
100
20
3
4
4-18
130
120
319
50
32
180
135
88
105
26
3
4
4-23
65
185
145
110
120
222
3
4
8-18
135
130
389
65
40
205
160
110
130
28
3
4
8-23
80
200
160
121
135
22
3
4
8-18
175
160
493
80
50
215
170
121
140
30
3
4
8-23
100
235
190
150
160
24
3
4.5
8-23
175
160
483
100
65
250
200
150
168
32
3
4.5
8-26
125
270
220
176
188
28
3
4.5
8-25
195
195
613
150
100
345
280
204
240
38
3
4.5
8-34
200
375
320
260
282
38
3
4.5
12-30
280
265
894
A42Y-100
A42Y-100P
A42Y-100R DA42Y-100(P)
20
10
125
90
51
68
22
2
4
4-18
25
115
85
58
65
16
2
4
4-14
96
85
264
25
16
140
100
58
78
24
2
4
4-18
32
140
100
66
78
18
2
4
4-18
110
100
277
32
20
155
110
66
82
24
2
4
4-23
40
150
110
76
85
18
3
4
4-18
130
110
289
40
25
170
125
76
95
26
3
4
4-23
50
165
125
8
100
20
3
4
4-18
130
120
319
50
32
195
145
88
112
28
3
4
4-26
65
185
145
110
120
22
3
4
8-18
135
130
389
65
32
220
170
110
138
32
3
4
8-26
80
200
160
121
135
22
3
4
8-18
175
160
493
80
40
230
180
121
148
34
3
4
8-26
100
235
190
150
160
24
3
4.5
8-23
175
160
483
100
50
265
210
150
172
38
3
4.5
8-30
125
270
220
176
188
28
3
4.5
8-25
195
195
613
150
80
355
290
204
250
46
3
4.5
12-34
200
375
320
260
282
38
3
4.5
12-30
280
265
894


　　　

 
       
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