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Flat gate valve, used to connect or cut off medium in pipelines is applicable for petroleum, gas, water, oil, etc.
Pressure: Class 150-900Lb or PN 1.0 -16.0MPa
Working temperature: -29-121℃
Characteristics
1. Base adopts O-ring and floating structure, realizing two-way seal for valve. Torque is only 1/2 of general valve.
2. When valve opened completely, the channel is a line, having low coefficient of flow resistance without any pressure losing.
3. Utilizing self-sealing packing structure.
4. Flat gate valve can release high pressure inside body automatically to ensure safety when closing.
5. Using fully seal structure
Standards
Design Length Flange Testing & Inspection Pressure-temperature Identification JB/T 5298 JB/T 5298 JB/T 79 JB/T 5298 GB 9131 GB/T 12220 API 6D API 6D ANSI B16.5 API 6D ANSI B16.34 MSS SP-25
Materials
Components Materials JB/T7298 API 6D Body/bonnet WCB WCB A352-LCB A351-CF8M Disc 2Cr13+ENP 20CrMoV+STL ANSI 410+ENP ANSI 316+ENP Stem 2Cr13 2Cr13 A182-F6a A182-F316S Base 25+PTFE 20CrMoV+STL A105+PTFE A182-F316+PTFE Packing NBR/FPM Flexible graphite PTFE Gasket 18-8/ Flexible graphite Bolt 35 35CrMo A193-B7M A193-B8 Applicable temperature -29~250℃ -29~550℃ -46~250℃ -40~200℃ Applicable medium Water, oil Steam, oil Propane, ethylene Nitric acid
Dimensions
300Lb | DN | L | D | D1 | D2 | Do | f | b | H | H1 | n-Φd |
Convex flange | 50 | 178 | 160 | 125 | 100 | 250 | 3 | 16 | 584 | 80 | 4-Φ18 |
65 | 190 | 180 | 145 | 120 | 250 | 3 | 18 | 634 | 95 | 4-Φ18 | |
80 | 203 | 195 | 160 | 135 | 250 | 3 | 20 | 688 | 100 | 8-Φ18 | |
100 | 229 | 215 | 181 | 155 | 300 | 3 | 20 | 863 | 114 | 8-Φ18 | |
125 | 254 | 245 | 210 | 185 | 350 | 3 | 22 | 940 | 132 | 8-Φ18 | |
150 | 267 | 280 | 240 | 210 | 350 | 3 | 24 | 1030 | 150 | 8-Φ23 | |
200 | 292 | 335 | 295 | 265 | 350 | 3 | 26 | 1277 | 168 | 12-Φ23 | |
250 | 330 | 405 | 355 | 320 | 400 | 3 | 30 | 1491 | 203 | 12-Φ25 | |
300 | 356 | 460 | 410 | 375 | 450 | 4 | 30 | 1701 | 237 | 12-Φ25 | |
350 | 381 | 520 | 470 | 435 | 500 | 4 | 34 | 1875 | 265 | 16-Φ30 | |
400 | 406 | 580 | 525 | 485 | 305 | 4 | 36 | 2180 | 300 | 16-Φ30 | |
450 | 432 | 640 | 585 | 545 | 305 | 4 | 40 | 2440 | 325 | 20-Φ34 | |
500 | 457 | 705 | 650 | 608 | 305 | 4 | 44 | 2860 | 360 | 20-Φ41 | |
600 | 508 | 840 | 770 | 718 | 305 | 5 | 48 | 3450 | 425 | 20-Φ41 | |
700 | 610 | 910 | 840 | 788 | 305 | 5 | 50 | 3960 | 460 | 24-Φ41 | |
800 | 660 | 1020 | 950 | 898 | 305 | 5 | 52 | 4550 | 512 | 24-Φ41 | |
900 | 711 | 1120 | 1050 | 998 | 250 | 5 | 54 | 5250 | 565 | 28-Φ48 | |
1000 | 811 | 1250 | 1170 | 1110 | 250 | 5 | 56 | 5870 | 630 | 28-Φ18 | |
600Lb | 50 | 178 | 160 | 125 | 100 | 250 | 3 | 20 | 584 | 80 | 4-Φ18 |
Convex flange | 65 | 190 | 180 | 145 | 120 | 300 | 3 | 22 | 634 | 95 | 8-Φ18 |
80 | 203 | 195 | 160 | 135 | 350 | 3 | 22, | 388 | 100 | 8-Φ18 | |
100 | 229 | 230 | 190 | 160 | 350 | 3 | 24 | 863 | 114 | 8-Φ23 | |
125 | 254 | 270 | 220 | 188, | 350 | 3 | 28 | 940 | 132 | 8-Φ25 | |
150 | 267 | 300 | 250 | 218 | 400 | 3 | 30 | 1030 | 150 | 8-Φ25 | |
200 | 292 | 360 | 310 | 278 | 450 | 3 | 34 | 1277 | 168 | 12-Φ25 | |
250 | 330 | 425 | 370 | 332 | 500 | 3 | 36 | 1491 | 203 | 12-Φ30 | |
300 | 356 | 485 | 430 | 390 | 305 | 4 | 40 | 1701 | 237 | 16-Φ30 | |
350 | 381 | 550 | 490 | 448 | 305 | 4 | 44 | 1875 | 265 | 16-Φ34 | |
400 | 406 | 610 | 550 | 505 | 305 | 4 | 48 | 2180 | 300 | 16-Φ34 | |
450 | 432 | 660 | 600 | 555 | 305 | 4 | 50 | 2440 | 325 | 20-Φ34 | |
500 | 457 | 730 | 660 | 610 | 305 | 4 | 52 | 2860 | 360 | 20-Φ41 | |
600 | 508 | 840 | 770 | 718 | 305 | 5 | 56 | 3450 | 425 | 20-Φ41 | |
700 | 610 | 955 | 875 | 815 | 305 | 5 | 60 | 3960 | 460 | 24-Φ48 | |
800 | 660 | 1070 | 990 | 930 | 305 | 5 | 64 | 4550 | 512 | 24-Φ48 | |
900 | 711 | 1180 | 1090 | 1025 | - | 5 | 66 | 5250 | 595 | 28-Φ54 | |
1000 | 811 | 1305 | 1210 | 1140 | - | 5 | 68 | 5870 | 660 | 28-Φ48 |
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