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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