DD343H/W低温蝶阀-止回阀-温州阀门网-温州阀门厂家|温州阀门企业|温州阀门厂商|温州阀门供应|温州龙湾阀门厂  >  止回阀频道

DD343H/W低温蝶阀

DD343H/W低温蝶阀主要适用于介质温度在-40℃～ -196℃等液氮（深冷）介质的低温工况中，为了保证低温蝶阀能在低温下安全可靠地运行，阀门零件在精加工前已进行深冷处理，阀盖采用长颈结构，其目的保护填料函的功能，使填料函处于离低温较远的位置，保证填料的密封效果。低温蝶阀使用介质通常为液氦、液氢、液化天然气、液氮、液氧等低温流体。
零部件材料
零件名称 材料
阀 体 铸铁、不锈钢、铬钼钢、合金钢
蝶 板 铸钢、合金钢、不锈钢、铬钼钢
密封圈 不锈钢与耐高温石棉板组合成多层次
阀 杆 2Cr13、1Cr13不锈钢、铬钼钢
填 料 柔性石墨
性能规范
工作压力（MPa） 10—40
适用温度℃ ≤425 ≤200
适用介质 水、油或非腐蚀性介质 硝酸类介质 醋酸类介质
材料 阀体、蝶板 WCB CF8/304 CF3M/316L
阀杆 2Cr13 304 316L
阀体密封面 堆焊 507 堆焊 304 堆焊 316L
蝶板密封面 304+柔性石墨 304+PTFE 316+PTFE
填料 柔性石墨 PTFE PTFE
泄漏率 符合GB/T13927-92标准
驱动方式 蜗轮传动、电动、气动、液动、手动
执行标准
制造标准 JB/T8527-97
法兰标准 GB9113-2000
结构长度标准 GB12221-89
检验标准 GB/T13927-92
外形连接尺寸
50 108 150 112 350 180 200 605 245 72 530 250 255 140 110 4-14 165 125 4-18
65 112 170 115 370 180 200 625 245 72 550 250 255 160 130 4-14 185 145 4-18
80 114 180 120 380 180 200 645 245 72 565 250 255 190 150 4-18 200 160 8-18
100 127 190 138 420 180 200 675 355 92 600 250 255 210 170 4-18 220 180 8-18
125 140 200 164 460 180 200 715 355 92 640 250 255 240 200 8-18 250 210 8-18
150 140 210 175 555 270 280 800 355 92 705 300 315 265 225 8-18 285 240 8-22
200 152 230 208 605 270 280 850 250 170 775 300 315 320 280 12-18 340 295 8-22
250 165 250 243 680 270 280 925 250 170 945 300 315 375 335 12-22 395 330 12-22
300 178 270 283 800 380 420 1035 450 220 1070 300 315 440 395 12-22 445 400 12-22
350 190 290 310 835 380 420 1070 450 220 1140 300 315 490 445 16-22 505 460 16-22
400 216 310 340 915 450 470 1190 450 280 1210 300 315 540 495 16-22 565 515 16-26
450 222 330 380 960 450 470 1250 650 280 1335 575 714 595 550 16-22 615 565 20-26
500 229 350 410 1020 480 490 1295 650 280 1415 575 714 645 600 20-22 670 620 20-26
600 267 390 470 1225 640 660 1455 850 380 1605 656 810 755 705 20-26 780 725 20-30
700 292 430 550 1355 640 660 1585 850 380 1844 656 810 860 810 24-26 895 840 24-30
800 318 470 640 1470 640 660 1700 1250 380 2040 656 810 975 920 24-30 1015 950 24-33
900 330 510 710 1545 850 900 1865 1250 380 2255 785 863 1075 1020 24-30 1115 1050 28-33
1000 410 550 770 1795 850 900 2015 1500 580 2380 785 863 1175 1120 28-30 1230 1160 28-36
1200 470 630 890 1965 850 900 2226 1500 580 2640 785 863 1405 1340 32-33 1455 1380 32-39
1400 530 710 920 2380 / / / / / 2886 / / 1630 1560 36-33 1675 1590 36-42
1600 600 790 1085 2956 / / / / / 3156 / / 1820 1760 40-33 1915 1850 40-54
1800 670 870 1230 3221 / / / / / 3421 / / 2045 1970 44-42 2115 2020 44-54
2000 760 950 1350 3485 / / / / / 3685 / / 2265 2180 48-48 2325 2230 44-54
公称通径DN 外形尺寸 连接尺寸
L H D343H D643H D943H PN0.6MPa PN1.0MPa
短 长 H 1 A 1 B 1 H 2 A 2 B 2 H 3 A 3 B 3 D D 1 z-d D D 1 z-d
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