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产品概述：高温高压安全阀型号A42Y/A48Y/A68Y，也叫电站安全阀，适用于工作温度“C型"≤425℃；“I型"≤500℃；“V型"≤500℃的蒸汽等介质设备或管路上，作为超压保护装置。
产品结构部件：
|
NO.
|
零件名称
|
C型材料
|
I型材料
|
V型材料
|
|
1
|
阀体
|
WCB
|
ZG1Cr5Mo
|
ZG15Cr1Mo1V
|
|
2
|
阀座
|
2Cr13
|
1Cr18Ni9Ti
|
12Cr1MoVA
|
|
3
|
调节圈
|
2Cr13
|
1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
|
4
|
阀瓣
|
2Cr13
|
17-4PH
|
17-7PH
|
|
5
|
导向套
|
2Cr13
|
1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
|
6
|
散热器
|
ZG230-450
|
ZG230-450
|
ZG230-450
|
|
7
|
阀盖
|
ZG230-450
|
ZG230-450
|
ZG230-450
|
|
8
|
弹簧
|
50CrVA
|
50CrVA
|
50CrVA
|
产品安装尺寸：
|
型号
|
公称
通径 |
do
|
D
|
K
|
g
|
g1
|
b
|
f
|
f1
|
Z-?d
|
DN'
|
D1
|
K1
|
g3
|
g2
|
b1
|
f'
|
f1'
|
z1-?d1
|
L
|
L1
|
≈H
|
|
SFA48Y-16C
SFA48Y-16I SFA48Y-16V |
40
|
25
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
50
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
120
|
115
|
540
|
|
50
|
32
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
65
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
135
|
120
|
618
|
|
|
65
|
40
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
80
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
160
|
140
|
710
|
|
|
80
|
50
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
100
|
220
|
180
|
|
155
|
22
|
3
|
|
8-18
|
160
|
150
|
730
|
|
|
100
|
65
|
220
|
180
|
|
155
|
20
|
3
|
|
8-18
|
150
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
225
|
175
|
892
|
|
|
150
|
100
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
200
|
340
|
295
|
|
265
|
26
|
3
|
|
12-23
|
240
|
235
|
1135
|
|
|
200
|
125
|
340
|
295
|
|
265
|
26
|
3
|
|
12-23
|
250
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
290
|
210
|
1135
|
|
|
SFA48Y-40
SFA48Y-40I SFA48Y-40V |
25
|
16
|
115
|
85
|
58
|
65
|
16
|
2
|
4
|
4-14
|
32
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
110
|
95
|
429
|
|
32
|
20
|
140
|
100
|
66
|
78
|
18
|
2
|
4
|
4-18
|
40
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
115
|
100
|
421
|
