|
API美标截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。阀杆的运动形式，有升降杆式（阀杆升降，手轮不升降），也有升降旋转杆式（手轮与阀杆一起旋转升降，螺母设在阀体上）。截止阀只适用于全开和全关，不允许作调节和节流。
API美标截止阀产品执行标准
|
设计与制造
|
结构长度
|
法兰尺寸
|
对焊连接尺寸
|
压力～温度
|
试验～检验
|
|
ANSI B16.34,BS1837
|
ANSI B16.10
|
ANSI B16.5
|
ANSI B16.25
|
ANSI B16.34
|
API598
|
API美标截止阀产品性能规范
|
公称压力（Lb）
|
强度试验
|
水密封试验
|
气密封试验
|
|
MPa
|
Lbf/in2
|
MPa
|
Lbf/in2
|
MPa
|
Lbf/in2
|
|
150
|
3.1
|
450
|
2.2
|
315
|
0.5～0.7
|
60～100
|
|
300
|
7.8
|
1125
|
5.6
|
815
|
|
600
|
15.3
|
2225
|
11.2
|
1630
|
|
900
|
23.1
|
3350
|
16.8
|
2440
|
|
1500
|
38.4
|
5575
|
28.1
|
4080
|
|
2500
|
64.6
|
9367
|
47.4
|
6873
|
API美标截止阀主要零件材料
|
体、盖、瓣
|
阀杆
|
密封面
|
垫片（环）
|
填料
|
工作温度（℃）
|
适用介质
|
|
WCB
|
2Cr13
|
13Cr
STL
本体材料
PTFE
尼龙
|
增强柔性石墨
13Cr/柔性石墨
SFB-2
08软钢
F304
F316
F304L
F316L
|
柔性石墨
增强柔性石墨
SFB/260
SFP/260
PTFE
|
≤425
|
水、蒸汽、油品
|
|
WC1
|
38CrMoAl
25CrMoV
|
≤450
|
|
WC6
|
≤540
|
|
WC9
|
≤570
|
|
C5C12
|
≤540
|
|
CF8
|
F304
|
≤200
(非腐蚀性介质≤600)
|
硝酸、醋酸、尿素
|
|
CF3
|
F316
|
|
CF8M
|
F304L
|
|
CF3M
|
F316L
|
API美标截止阀主要外形和连接尺寸
|
磅级
|
规格
|
L
|
D
|
t
|
G
|
C
|
n-Φd
|
W
|
H
|
|
150Lb
|
1/2〞
|
mm
|
108
|
89
|
12
|
35
|
60.5
|
4-15
|
125
|
169
|
|
inch
|
4.25
|
3.5
|
0.47
|
1.38
|
2.38
|
4-0.59
|
4.92
|
6.65
|
|
3/4〞
|
mm
|
117
|
98
|
12
|
43
|
70
|
4-15
|
125
|
180
|
|
inch
|
4.61
|
3.86
|
0.47
|
1.69
|
2.76
|
4-0.59
|
4.92
|
7.08
|
|
1〞
|
mm
|
127
|
108
|
12
|
51
|
79.5
|
4-15
|
125
|
190
|
|
inch
|
5
|
4.25
|
0.47
|
2
|
3.13
|
4-0.59
|
4.92
|
7.48
|
|
11/2〞
|
mm
|
165
|
127
|
14.3
|
73
|
98.5
|
4-16
|
180
|
347
|
|
inch
|
6.5
|
5
|
0.56
|
2.87
|
3.88
|
4-0.62
|
7.09
|
13.66
|
|
2〞
|
mm
|
203
|
152
|
15.9
|
92
|
120.5
|
4-19
|
180
|
356
|
|
inch
|
8.00
|
6.00
|
0.625
|
3.62
|
4.75
|
4-0.75
|
7.09
|
14
|
|
21/2〞
|
mm
|
216
|
178
|
17.5
|
105
|
139.5
|
4-19
|
240
|
381
|
|
inch
|
8.5
|
7
|
0.69
|
4.12
|
5.50
|
4-0.75
|
9.45
|
15.00
|
|
3〞
|
mm
|
241
|
190
|
19.1
|
127
|
152.4
|
4-19
|
280
|
13
|
|
inch
|
9.5
|
7.50
|
0.75
|
5
|
6
|
4-0.75
|
11.02
|
16.25
|
|
4〞
|
mm
|
292
|
229
|
24
|
157
|
190.5
|
8-19
|
280
|
500
|
|
inch
|
11.50
|
9.00
|
0.94
|
6.19
|
7.5
|
8-0.75
|
11.02
|
19.68
|
|
6〞
|
mm
|
406
|
279
|
25.4
|
216
|
241.5
|
8-22
|
360
|
656
|
|
inch
|
16
|
11.0
|
1.00
|
8.5
|
9.50
|
8-0.88
|
14.17
|
22.25
|
|
8〞
|
mm
|
495
|
343
|
29
|
270
|
298.5
|
8-22
|
450
|
660
|
|
inch
|
19.5
|
13.5
|
1.12
|
10.62
|
11.75
|
8-0.88
|
17.75
|
26.00
|
API美标截止阀主要外形和连接尺寸
|
磅级
|
规格
|
L
|
D
|
t
|
G
|
C
|
n-Φd
|
W
|
H
|
|
300Lb
|
1/2〞
|
mm
|
152
|
95
|
15
|
35
|
66.5
|
4-15
|
125
|
190
|
|
inch
|
5.98
|
3.74
|
0.95
|
1.38
|
2.62
|
4-0.75
|
4.92
|
7.48
|
|
3/4〞
|
mm
|
178
|
117
|
16
|
43
|
82.5
|
4-19
|
125
|
212
|
|
inch
|
7
|
4.61
|
0.62
|
1.69
|
3.25
|
4-0.75
|
4.92
|
8.35
|
|
1〞
|
mm
|
203
|
124
|
18
|
51
|
89
|
4-19
|
160
|
231
|
|
inch
|
8
|
4.9
|
0.71
|
2
|
3.50
|
4-0.75
|
6.2
|
9.1
|
|
11/2〞
|
mm
|
229
|
156
|
20.7
|
73
|
114.5
|
4-22
|
200
|
391
|
|
inch
|
9
|
6.12
|
0.81
|
2.87
|
4.51
|
4-0.87
|
8
|
15.43
|
|
2〞
|
mm
|
267
|
165
|
22
|
92
|
127
|
8-19
|
200
|
406
|
|
inch
|
105
|
6.5
|
0.88
|
3.62
|
5
|
8-0.75
|
7.87
|
16.00
|
|
21/2〞
|
mm
|
292
|
190
|
25
|
105
|
149
|
8-22
|
240
|
457
|
|
inch
|
11.5
|
7.50
|
1.00
|
4.12
|
5.88
|
8-0.88
|
9.45
|
18.00
|
|
3〞
|
mm
|
318
|
210
|
29
|
127
|
168.5
|
8-22
|
280
|
470
|
|
inch
|
1250
|
8.25
|
1.12
|
5
|
6.62
|
8-0.88
|
11.02
|
18.50
|
|
4〞
|
mm
|
356
|
2.54
|
32
|
157
|
200
|
8-22
|
320
|
590
|
|
inch
|
14.00
|
10.00
|
1.25
|
6.19
|
7.88
|
8-0.88
|
12.60
|
23.23
|
|
6〞
|
mm
|
444
|
318
|
37
|
216
|
270
|
12-22
|
500
|
711
|
|
inch
|
17.50
|
12.50
|
1.44
|
8.5
|
10.62
|
12-0.88
|
19.68
|
28.00
|
|
8〞
|
mm
|
559
|
381
|
41
|
270
|
330
|
12-25
|
500
|
750
|
|
inch
|
22.0
|
15
|
1.62
|
10.62
|
13.00
|
12-100
|
19.68
|
29.50
|
API美标截止阀主要外形和连接尺寸
|
磅级
|
规格
|
L
|
D
|
t
|
G
|
C
|
n-Φd
|
W
|
H
|
|
600Lb
|
1/2〞
|
mm
|
165
|
95
|
15
|
35
|
66.5
|
4-15
|
160
|
285
|
|
inch
|
6.5
|
3.71
|
0.59
|
1.38
|
2.62
|
4-0.75
|
6.2
|
11.22
|
|
3/4〞
|
mm
|
190
|
117.5
|
16
|
43
|
82.5
|
4-19
|
190
|
285
|
|
inch
|
7.48
|
4.61
|
0.62
|
1.69
|
3.25
|
4-0.75
|
6.2
|
11.22
|
|
1〞
|
mm
|
216
|
124
|
18
|
51
|
89
|
4-19
|
160
|
313
|
|
inch
|
8.5
|
4.9
|
0.71
|
2
|
3.5
|
4-0.75
|
6.2
|
12.32
|
|
11/2〞
|
mm
|
241
|
156
|
23
|
73
|
114.5
|
4-22
|
240
|
365
|
|
inch
|
9.5
|
6.12
|
0.91
|
2.87
|
4.51
|
4-0.88
|
9.45
|
14.17
|
|
2〞
|
mm
|
292
|
165
|
25
|
92
|
127
|
8-19
|
240
|
444
|
|
inch
|
11.50
|
6.50
|
1.00
|
3.62
|
5.00
|
8-0.75
|
9.45
|
17.50
|
|
21/2〞
|
mm
|
330
|
190
|
29
|
105
|
149
|
8-22
|
240
|
483
|
|
inch
|
13
|
7.50
|
1.12
|
4.12
|
5.88
|
8-0.88
|
9.45
|
19
|
|
3〞
|
mm
|
356
|
210
|
32
|
127
|
168
|
8-22
|
280
|
533
|
|
inch
|
14.00
|
8.25
|
1.25
|
5
|
6.62
|
8-0.88
|
11.02
|
21
|
|
4〞
|
mm
|
4.06
|
273
|
38.1
|
157
|
216
|
8-25
|
360
|
622
|
|
inch
|
16.00
|
10.75
|
1.5
|
6.19
|
8.5
|
8-1.00
|
14.17
|
24.50
|
|
6〞
|
mm
|
495
|
356
|
47.7
|
216
|
292
|
12-29
|
500
|
800
|
|
inch
|
19.50
|
14
|
1.88
|
8.5
|
11.5
|
12-1.14
|
19.68
|
31.50
|
|
8〞
|
mm
|
597
|
419
|
55.6
|
270
|
349
|
12-32
|
550
|
927
|
|
inch
|
23.50
|
16.5
|
2.19
|
10.62
|
13.75
|
12-1.25
|
21.65
|
36.50
|
|
12
