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API焊接截止阀
截止阀是一种常用的截断阀,主要用来接通或截断管路中的介质,一般不用于调节流量。截止阀适用的压力、温度范围很大,但一般用于中、小口径的管道。
截止阀的主要优点:
1)与闸阀相比,截止阀的结构较简单,制造与维修都较方便。
2)密封面不易磨损、擦伤,密封性较好,寿命较长。
3)启闭时阀瓣行程较小,启闭时间较短,阀门高度较小。
截止阀的主要优点:
1)与闸阀相比,截止阀的结构较简单,制造与维修都较方便。
2)密封面不易磨损、擦伤,密封性较好,寿命较长。
3)启闭时阀瓣行程较小,启闭时间较短,阀门高度较小。
主要零件材料及性能规范
主要零部件
|
阀体
阀盖
|
碳钢
|
铬镍钛不锈钢
|
铬镍钼钛不锈钢
|
超低碳不锈钢
|
铬钼合金钢
|
低温碳钢
|
||
阀瓣
阀座
|
碳钢堆焊硬质合金或不锈钢
|
铬镍钛不锈钢
堆焊硬质合金
|
铬镍钼钛不锈钢
堆焊硬质合金
|
超低碳不锈钢
|
铬钼合金钢
堆焊硬质合金
|
不锈钢堆焊硬质合金
|
|||
阀杆
|
铬不锈钢
|
铬镍钛不锈钢
|
铬镍钼钛不锈钢
|
超低碳不锈钢
|
铬钼合金钢
|
不锈钢
|
|||
填料
|
石墨石棉盘根
|
浸聚四氟乙烯石棉盘根
|
柔性石墨石棉盘根
|
浸聚四氟乙烯石棉盘根
|
|||||
垫片
|
石棉垫片
|
不锈钢带四氟乙烯缠绕垫片
|
柔性石墨+不锈钢
|
聚四氟乙烯
|
|||||
阀杆螺母
|
高镍球铁/ZguAL10Fe3
|
||||||||
主要参数
|
适用介质
|
水、蒸汽、油品
|
硝酸类
|
醋酸类
|
尿素、甲铵液等
|
水、蒸汽、石油及石油产品
|
氨气、液氨
|
||
适用温度℃
|
≤425
|
≤200
|
≤200
|
≤200
|
≤550
|
-45~150
|
型号
|
公称
通径
NPS(in)
|
压力级
Class
|
主要结构尺寸(mm)
|
阀体
材料
|
性能规范
|
||||
Do
|
D
|
L
|
H
|
适用温度(℃)
|
适用介质
|
||||
SFJ-61C150C
|
2"
|
150
|
200
|
|
203
|
380
|
WCB
|
≤425
|
蒸气、油品、水等
|
"
|
3"
|
"
|
250
|
|
241
|
465
|
"
|
"
|
"
|
''
|
4"
|
"
|
300
|
|
292
|
530
|
"
|
"
|
"
|
"
|
6"
|
"
|
350
|
|
406
|
650
|
"
|
"
|
"
|
"
|
8"
|
"
|
400
|
|
495
|
760
|
"
|
"
|
"
|
"
|
10"
|
"
|
500
|
|
622
|
860
|
"
|
"
|
"
|
"
|
12"
|
"
|
600
|
|
699
|
1000
|
"
|
"
|
"
|
"
|
14"
|
"
|
600
|
|
787
|
1050
|
"
|
"
|
"
|
"
|
16"
|
"
|
750
|
|
914
|
1150
|
"
|
"
|
"
|
SFJ-61C300C
|
2"
|
300
|
200
|
|
267
|
425
|
WCB
|
≤425
|
蒸气、油品、水等
|
"
|
3"
|
"
|
250
|
|
318
|
530
|
"
|
"
|
"
|
"
|
4"
|
"
|
300
|
|
356
|
610
|
"
|
"
|
"
|
"
|
6"
|
"
|
400
|
|
445
|
790
|
"
|
"
|
"
|
"
|
8"
|
"
|
500
|
|
559
|
870
|
"
|
"
|
"
|
"
|
10"
|
"
|
500
|
|
622
|
1040
|
"
|
"
|
"
|
"
|
12"
|
"
|
600
|
|
711
|
1140
|
"
|
"
|
"
|
"
|
14"
|
"
|
750
|
|
838
|
1200
|
"
|
"
|
"
|
"
|
16"
|
"
|
850
|
|
864
|
1400
|
"
|
"
|
"
|
SFJ-61C600C
|
2"
|
600
|
250
|
|
292
|
475
|
WCB
|
≤425
|
蒸气、油品、水等
|
"
|
3"
|
"
|
300
|
|
356
|
585
|
"
|
"
|
"
|
"
|
4"
|
"
|
350
|
|
432
|
675
|
"
|
"
|
"
|
"
|
6"
|
"
|
450
|
|
559
|
885
|
"
|
"
|
"
|
"
|
8"
|
"
|
500
|
|
660
|
945
|
"
|
"
|
"
|
"
|
10"
|
"
|
600
|
|
787
|
1040
|
"
|
"
|
"
|
"
|
12"
|
"
|
750
|
|
838
|
1280
|
"
|
"
|
"
|
"
|
14"
|
"
|
850
|
|
889
|
1350
|
"
|
"
|
"
|
"
|
16"
|
"
|
960
|
|
991
|
1550
|
"
|
"
|
"
|
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