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。
主要零件材料及性能规范
主要零部件 |
阀体、阀盖 |
WCB |
ZG1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
ZG1Cr5Mo |
阀瓣 |
1Cr13 |
|
1Cr18Ni12Mo2Ti |
1Cr5Mo |
阀杆 |
1Cr13 |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
1Cr5Mo |
阀杆螺母 |
ZguAL10Fe3/球墨铸铁 |
填料 |
柔性石墨、石墨石棉盘根 |
主要
参数 |
适用介质 |
蒸汽、油品、水等 |
硝酸类 |
醋酸类 |
蒸汽、油品、水等 |
适用温度℃ |
≤425 |
≤200 |
≤200 |
≤425 |
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 |
D |
D0 |
L |
H |
适用温度(℃) |
适用介质 |
SFD46J-41C150C |
3/4" |
150 |
99 |
100 |
117 |
360 |
LCB |
≥-46 |
NH3,丙烷等 |
" |
1" |
" |
108 |
140 |
127 |
459 |
" |
" |
" |
" |
2" |
" |
152 |
200 |
203 |
491 |
" |
" |
" |
" |
3" |
" |
190 |
250 |
241 |
565 |
" |
" |
" |
" |
4" |
" |
229 |
250 |
292 |
676 |
" |
" |
" |
" |
6" |
" |
279 |
350 |
406 |
765 |
" |
" |
" |
" |
8" |
" |
343 |
460 |
495 |
873 |
" |
" |
" |
" |
10" |
" |
406 |
560 |
622 |
1071 |
" |
" |
" |
" |
12" |
" |
483 |
610 |
699 |
1318 |
" |
" |
" |
SFD101J-41C150C |
3/4" |
150 |
99 |
100 |
117 |
420 |
LC3 |
≥-101 |
乙烯等 |
" |
1" |
" |
108 |
140 |
127 |
520 |
" |
" |
" |
" |
2" |
" |
152 |
200 |
203 |
550 |
" |
" |
" |
" |
3" |
" |
190 |
250 |
241 |
625 |
" |
" |
" |
" |
4" |
" |
229 |
250 |
292 |
736 |
" |
" |
" |
" |
6" |
" |
279 |
350 |
406 |
825 |
" |
" |
" |
" |
8" |
" |
343 |
460 |
495 |
943 |
" |
" |
" |
" |
10" |
" |
406 |
560 |
622 |
1141 |
" |
" |
" |
" |
12" |
" |
483 |
610 |
699 |
1388 |
" |
" |
" |
SFD196J-41C150P |
3/4" |
150 |
99 |
100 |
117 |
420 |
ZGOCr18Ni9 |
≥-196 |
液氮、乙烯、液化天然气等 |
" |
1" |
" |
108 |
140 |
127 |
520 |
" |
" |
" |
" |
2" |
" |
152 |
200 |
203 |
550 |
" |
" |
" |
" |
3" |
" |
190 |
250 |
241 |
625 |
" |
" |
" |
" |
4" |
" |
229 |
250 |
292 |
736 |
" |
" |
" |
" |
6" |
" |
279 |
350 |
406 |
825 |
" |
" |
" |
" |
8" |
" |
343 |
460 |
495 |
843 |
" |
" |
" |
" |
10" |
" |
406 |
560 |
622 |
1141 |
" |
" |
" |
" |
12" |
" |
483 |
610 |
699 |
1388 |
" |
" |
" |
SFD46J-41C300C |
2" |
300 |
165 |
200 |
267 |
545 |
LCB |
≥-46 |
NH3、丙烷气 |
" |
3" |
" |
210 |
250 |
318 |
641 |
" |
" |
" |
" |
4" |
" |
254 |
350 |
356 |
778 |
" |
" |
" |
" |
6" |
" |
318 |
510 |
445 |
921 |
" |
" |
" |
" |
8" |
" |
381 |
510 |
559 |
959 |
" |
" |
" |
" |
10" |
" |
444 |
610 |
622 |
1029 |
" |
" |
" |
" |
12" |
" |
521 |
680 |
711 |
1268 |
" |
" |
" |
SFD101J-41C300C |
2" |
300 |
165 |
200 |
267 |
565 |
LC3 |
≥-101 |
乙烯等 |
" |
3" |
" |
210 |
250 |
318 |
671 |
" |
" |
" |
" |
4" |
" |
254 |
350 |
356 |
808 |
" |
" |
" |
" |
6" |
" |
318 |
510 |
445 |
51 |
" |
" |
" |
" |
8" |
" |
381 |
510 |
559 |
989 |
" |
" |
" |
" |
10" |
" |
444 |
610 |
622 |
1059 |
" |
" |
" |
" |
12" |
" |
521 |
680 |
711 |
1298 |
" |
" |
" |
SFD196J-61C600P |
3/4" |
600 |
35 |
140 |
133 |
420 |
ZGOCr18Ni9 |
≥-196 |
液氮、乙烯、液化天然气等 |
" |
1" |
" |
41 |
180 |
127 |
487 |
" |
" |
" |
" |
11/2" |
" |
70 |
180 |
241 |
549 |
" |
" |
" |
" |
2" |
" |
165 |
250 |
292 |
678 |
" |
" |
" |
SFD196J-61C600P |
3" |
600 |
210 |
300 |
356 |
838 |
ZGOCr18Ni9 |
≥-196 |
液氮、乙烯、液化天然气等 |
" |
4" |
" |
273 |
400 |
432 |
949 |
" |
" |
" |
" |
6" |
" |
356 |
610 |
559 |
1249 |
" |
" |
" | |