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A48Y弹簧全启式安全阀
A48Y-16C带扳手弹簧全启式安全阀 带扳手弹簧全启式安全阀A48Y-16C的详细介绍带扳手弹簧全启式安全阀A48Y-16C适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上。A44Y型弹簧全启式安全阀适用于工作温度≤300℃的空气、石油 等介质的设备和管路上，作为超压保护装置。产品连接法兰标准PN<6.4MPa按JB/和T-94系列1.2标准。PN≥6.4MPa按JB/和T-94系列2标准安全阀的选用由操作压力决定安全阀的公称压力，由操作温度决定安全阀的使用温度范围，由计算出的安全阀的定压值决定弹簧或杠杆的定压范围，再根据使用介质决定安全阀的材质和结构型式，再根据安全阀泄放量计算出安全阀的喉径。
结构简述
1、弹簧全启式安全阀具有结构简单、密封性能好、开启压力准确、排放能力大、回座压差小、调整方便等特点。
2、喷嘴型阀座：阀座为位伐尔喷嘴型阀座，蒸汽流经阀座出口处时达到音速，排放系数大，阀座密封面堆焊钴铬钨硬质合金，耐磨抗冲蚀，寿命长。
3、热弹性阀瓣：阀瓣设计为热弹性结构，利用其在介质压力下微小的变形，提高密封能力，克服安全阀在介质压力下临近整定压力时的前泄现象。阀瓣密封面采用先进的激光淬火技术，提高了硬度、耐磨性、抗冲抗性。
4、调节螺母：通过调整调节螺母，调整弹簧压缩量，使阀门能够很方便、很迅速地获得准确的整定压力。
5、背压调整套：调整阀瓣背压的辅助机构，通过背压调整套调整，可获得合适的回座压差。上调时，使阀门背压降低。下调时，使阀门背压提高。
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。
主要零部件材料:
|
NO
|
零件名称
|
材料
|
|
1
|
阀体
|
WCB
|
|
2
|
阀座
|
ZG2Cr13
|
|
3
|
调节圈
|
ZG2Cr13
|
|
4
|
阀瓣
|
2Cr13
|
|
5
|
导向套
|
2Cr13
|
|
6
|
阀盖
|
ZG230-450
|
|
7
|
弹簧
|
50CrVA
|
|
8
|
阀杆
|
2Cr13
|
|
9
|
扳手
|
ZG200-400
|
|
10
|
调整螺杆
|
45
|
|
11
|
保护罩
|
ZG200-400
|
|
|
密封面材料
|
"H"堆焊D507,"Y"堆焊Co基硬质合金
|
主要连接尺寸
|
型号
|
公称通径
|
do
|
D
|
K
|
g
|
g1
|
b
|
f
|
f1
|
Z-ød
|
DN''''
|
D1
|
K1
|
g3
|
g2
|
b1
|
f''''
|
f1''''
|
Z1-ød1
|
L
|
L1
|
≈H
|
|
A48Y-16CA44Y-16CA44Y-16P A44Y-16R
|
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
|
1073
|
|
250
|
150
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
300
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
350
|
320
|
1307
|
|
300
|
220
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
400
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
370
|
350
|
1233
|
|
350
|
250
|
520
|
470
|
|
435
|
34
|
4
|
|
16-26
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1711
|
|
400
|
280
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1780
|
|
A48Y-25
A44Y-25
A44Y-25P A44Y-25R
|
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
|
1073
|
|
250
|
150
|
425
|
370
|
|
332
|
36
|
3
|
|
12-30
|
300
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
350
|
320
|
1307
|
|
300
|
220
|
485
|
430
|
|
390
|
40
|
4
|
|
16-30
|
400
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
370
|
350
|
1233
|
|
350
|
250
|
555
|
490
|
|
448
|
44
|
4
|
|
16-34
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1711
|
|
400
|
280
|
620
|
550
|
|
505
|
48
|
4
|
|
16-36
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1780
|
|
A48Y-40 A44Y-40 A44Y-40P A44Y-40R
|
20
|
15
|
105
|
75
|
51
|
55
|
16
|
2
|
4
|
4-14
|
25
|
115
|
85
|
|
65
|
16
|
2
|
|
4-14
|
110
|
95
|
411
|
|
25
|
16
|
115
|
85
|
58
|
65
|
16
|
2
|
4
|
4-14
|
32
|
140
|
100
|
|
78
|
18
|
2
|
|
4-18
|
110
|
95
|
411
|
|
32
|
20
|
140
|
100
|
66
|
78
|
18
|
2
|
4
|
4-18
|
40
|
150
|
110
|
|
85
|
18
|
3
|
|
4-18
|
115
|
100
|
411
|
|
40
|
25
|
150
|
110
|
76
|
85
|
18
|
3
|
4
|
4-18
|
50
|
165
|
125
|
|
100
|
20
|
3
|
|
4-18
|
120
|
110
|
472
|
|
50
|
32
|
165
|
125
|
88
|
100
|
20
|
3
|
4
|
4-18
|
65
|
185
|
145
|
|
120
|
20
|
3
|
|
4-18
|
135
|
120
|
532
|
|
65
|
40
|
185
|
145
|
110
|
120
|
22
|
3
|
4
|
8-18
|
80
|
200
|
160
|
|
135
|
20
|
3
|
|
8-18
|
160
|
140
|
556
|
|
80
|
50
|
200
|
160
|
121
|
135
|
22
|
3
|
4
|
8-18
|
100
|
220
|
180
|
|
155
|
22
|
3
|
|
8-18
|
170
|
135
|
561
|
|
100
|
65
|
235
|
190
|
150
|
160
|
24
|
3
|
4.5
|
8-23
|
125
|
250
|
210
|
|
185
|
22
|
3
|
|
8-18
|
195
|
175
|
697
|
|
125
|
80
|
270
|
220
|
176
|
188
|
28
|
3
|
4.5
|
8-26
|
150
|
285
|
240
|
|
210
|
24
|
3
|
|
8-23
|
210
|
190
|
857
|
|
150
|
100
|
300
|
250
|
204
|
218
|
30
|
3
|
4.5
|
8-26
|
175
|
310
|
270
|
|
240
|
26
|
3
|
|
8-23
|
255
|
230
|
915
|
|
200
|
125
|
375
|
320
|
260
|
282
|
38
|
3
|
4.5
|
12-30
|
250
|
405
|
355
|
|
320
|
30
|
3
|
|
12-26
|
300
|
260
|
1073
|
|
250
|
150
|
450
|
385
|
313
|
345
|
42
|
3
|
4.5
|
12-34
|
300
|
460
|
410
|
|
375
|
30
|
4
|
|
12-26
|
350
|
320
|
1307
|
|
300
|
220
|
515
|
450
|
364
|
408
|
46
|
4
|
4.5
|
16-34
|
400
|
580
|
525
|
|
485
|
36
|
4
|
|
16-30
|
370
|
350
|
1233
|
|
350
|
250
|
580
|
510
|
422
|
465
|
52
|
4
|
5
|
16-36
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1711
|
|
400
|
280
|
660
|
585
|
474
|
535
|
58
|
4
|
5
|
16-41
|
500
|
715
|
650
|
|
608
|
44
|
4
|
|
20-34
|
500
|
450
|
1711
|
|
A48Y-64
A44Y-64
A44Y-64P A44Y-64R
|
20
|
10
|
125
|
90
|
51
|
68
|
22
|
2
|
4
|
4-18
|
25
|
115
|
85
|
58
|
65
|
16
|
2
|
4
|
4-14
|
96
|
85
|
297
|
|
25
|
16
|
140
|
100
|
58
|
78
|
22
|
2
|
4
|
4-18
|
32
|
140
|
100
|
66
|
78
|
18
|
2
|
4
|
4-18
|
110
|
100
|
310
|
|
32
|
20
|
155
|
110
|
66
|
82
|
24
|
2
|
4
|
4-23
|
|
|
|
|
|
|
|
|
|
|
|
|
|
