A48Y,A48H弹簧全启式安全阀介绍
A48Y带扳手弹簧全启式安全阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上，作为超压保护装置。连接法兰标准PN<6.4MPa按JB/T-94系例1。PN≥6.4MPa按JB/T-94系列2标准。
A48Y,A48H弹簧全启式安全阀相关标准
设计规范：GB/T 12243
结构长度：GB/T 12221
法兰连接：JB/T 79
试验与检验：GB/T 12242
产品标识：GB/T 12220
供货规范：JB/T 7928
A48Y,A48H弹簧全启式安全阀结构图
A48Y,A48H弹簧全启式安全阀主要零部件材料
|
序号
|
零件名称
|
A48Y-C材料
|
A48Y-P 材料
|
A48Y-R 材料
|
|
1
|
阀体
|
WCB
|
ZG1Cr18Ni9Ti
|
CF8M
|
|
2
|
阀座
|
2Cr13
|
1Cr18Ni9Ti
|
316
|
|
3
|
调节圈
|
ZG2Cr13
|
ZG1Cr18Ni9Ti
|
0Cr18Ni12Mo2Ti
|
|
4
|
反冲盘
|
ZG2Cr13
|
ZG1Cr18Ni9Ti
|
316
|
|
5
|
阀瓣
|
2Cr13
|
1Cr18Ni9Ti
|
316
|
|
6
|
导向套
|
2Cr13
|
1Cr18Ni9Ti
|
0Cr18Ni12Mo2Ti
|
|
7
|
阀盖
|
ZG230-450
|
ZG230-450
|
ZG230-450
|
|
8
|
弹簧
|
50CrVA
|
50CrVA包覆氟塑料
|
50CrVA包覆氟塑料
|
|
9
|
阀杆
|
2Cr13
|
1Cr18Ni9Ti
|
1Cr18Ni12Mo2Ti
|
|
10
|
扳手
|
ZG200-400
|
ZG200-400
|
ZG200-400
|
|
11
|
调整螺杆
|
45
|
2Cr13
|
2Cr13
|
|
12
|
保护罩
|
ZG200-400
|
ZG200-400
|
316
|
|
13
|
密封面材料
|
堆焊Co基硬质合金
|
弹簧全启式安全阀主要外形连接尺寸mm
|
序号
|
DN
|
do
|
D
|
K
|
g
|
g1
|
b
|
f
|
f1
|
Z- d
|
DN'
|
D1
|
k1
|
g3
|
g2
|
b1
|
f'
|
f1'
|
Z1- d1
|
L
|
L1
|
H
|
|
A48Y-16C
|
20
|
15
|
105
|
75
|
|
55
|
16
|
2
|
|
4-14
|
25
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
110
|
95
|
411
|
|
25
|
16
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
32
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
110
|
95
|
411
|
|
32
|
20
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
40
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
115
|
100
|
411
|
|
40
|
25
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
50
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
120
|
110
|
472
|
|
50
|
32
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
65
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
135
|
120
|
532
|
|
65
|
40
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
80
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
160
|
140
|
556
|
|
80
|
50
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
100
|
220
|
180
|
|
155
|
22
|
3
|
|
8-18
|
170
|
135
|
561
|
|
100
|
65
|
220
|
180
|
|
155
|
20
|
3
|
|
8-18
|
125
|
250
|
210
|
|
185
|
22
|
3
|
|
8-18
|
195
|
175
|
667
|
|
125
|
80
|
250
|
210
|
|
185
|
22
|
3
|
|
8-18
|
150
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
210
|
190
|
857
|
|
150
|
100
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
175
|
310
|
270
|
|
240
|
26
|
3
|
|
8-23
|
255
|
230
|
915
|
|
200
|
125
|
340
|
295
|
|
265
|
26
|
3
|
|
12-23
|
250
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
300
|
260
|
1,073
|
|
250
|
150
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
300
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
350
|
320
|
1,307
|
|
300
|
220
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
400
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
370
|
350
|
1,233
|
|
350
|
250
|
520
|
470
|
|
435
|
34
|
4
|
|
16-26
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1,711
|
|
400
|
280
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1,780
|
|
A48Y-25
|
20
|
15
|
105
|
75
|
|
55
|
16
|
2
|
|
4-14
|
25
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
110
|
95
|
411
|
|
25
|
16
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
32
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
110
|
95
|
411
|
|
32
|
20
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
40
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
115
|
100
|
411
|
|
40
|
25
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
50
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
120
|
110
|
472
|
|
50
|
32
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
65
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
135
|
120
|
532
|
|
65
|
40
|
185
|
145
|
|
120
|
22
|
3
|
|
8-18
|
80
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
160
|
140
|
556
|
|
80
|
50
|
200
|
160
|
|
135
|
22
|
3
|
|
8-18
|
100
|
220
|
180
|
|
155
|
22
|
3
|
|
8-18
|
170
|
135
|
561
|
|
100
|
65
|
230
|
190
|
|
160
|
24
|
3
|
|
8-23
|
125
|
250
|
210
|
|
185
|
22
|
3
|
|
8-18
|
195
|
175
|
667
|
|
125
|
80
|
270
|
220
|
|
188
|
28
|
3
|
|
8-26
|
150
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
210
|
190
|
857
|
|
150
|
100
|
300
|
250
|
|
218
|
30
|
3
|
|
8-26
|
175
|
310
|
270
|
|
240
|
26
|
3
|
|
8-23
|
255
|
230
|
915
|
|
200
|
125
|
360
|
310
|
|
278
|
34
|
3
|
|
12-26
|
250
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
300
|
260
|
1,073
|
|
250
|
150
|
425
|
370
|
|
332
|
36
|
3
|
|
12-30
|
300
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
350
|
320
|
1,307
|
|
300
|
220
|
485
|
430
|
|
390
|
40
|
4
|
|
16-30
|
400
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
370
|
350
|
1,233
|
|
350
|
250
|
555
|
490
|
|
448
|
44
|
4
|
|
16-34
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1,711
|
|
400
|
280
|
620
|
550
|
|
505
|
48
|
4
|
|
16-36
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1,780
|