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Water seal gate valve is used as closing device for vacuum condensing system of steam engine in thermal power.
Nominal pressure (PN): 100MPa.
Working temperature: 425℃.
Medium: water, steam, oil and non corrosive gas.
Characteristics:
1. Utilize two-way elastic sealing, having reliable sealing;
2. Compact Structure, convenient maintenance, long service life;
3. The valve must be opened or closed completely. It cannot be used to regulate flow;
4. Face to face: flange, welding; Actuator: manual, electricity
Standards
Design: GB 12234
Flange: GB9113, JB7490
Pressure & temperature: JB/T74, GB9131
Length: GB/T12221
Face to face: -
Inspection & testing: JB/T9092, GB13927
Parameter
Nominal Pressure PN(MPa) Body Strength Testing 1.0 1.6 2.5 4.0 6.4 10.0 Seal Testing 1.5 2.4 3.8 6.0 9.6 15.0 Upper Seal Testing 1.1 1.8 2.8 4.4 7.0 11.0 Hermetic Seal Tesing 1.1 1.8 2.8 4.4 7.0 11.0 Applicable Range Materials Applicable(℃) Applicable Medium Carbon steel ≤425 Water, steam, oil and non corrosive gas Alloy ≤540
Dimensions
Nominal Diameter | L | α | H | DO | PN1.6/MPa | PN2.5/MPa | ||
D | D1 | D | D1 | |||||
50 | 250 | 37o30' | 334 | 250 | 58 | 50 | 64 | 4g |
65 | 270 | 37o30' | 439 | 250 | 75 | 65 | 82 | 67 |
80 | 280 | 37o30' | 495 | 300 | 91 | 79 | 95 | 77 |
100 | 300 | 37o30' | 575 | 350 | 11O | 97 | 117 | 101 |
125 | 325 | 37o30' | 587 | 350 | 136 | 121 | 144 | 126 |
150 | 350 | 37o30' | 607 | 350 | 163 | 146 | 172 | 158 |
200 | 400 | 37o30' | 740 | 400 | 223 | 202 | 223 | 202 |
250 | 450 | 37o30' | 863 | 400 | 278 | 254 | 278 | 254 |
300 | 500 | 37o30' | 990 | 400 | 330 | 305 | 330 | 305 |
350 | 550 | 37o30' | 1137 | 500 | 382 | 352 | 382 | 352 |
400 | 600 | 37o30' | 1523 | 500 | 432 | 399 | 432 | 39g |
450 | 650 | 37o30' | 1618 | 600 | 485 | 451 | 485 | 451 |
500 | 700 | 37o30' | 1657 | 600 | 535 | 501 | 535 | 499 |
600 | 800 | 37o30' | 1746 | 700 | 636 | 601 | 636 | 599 |
Nominal Diameter | L | D | α | PN4.0/MPa | PN6.4/MPa | PNl0.0/MPa | ||||||
D1 | H | D0 | D1 | H | DO | D1 | H | D0 | ||||
50 | 250 | 64 | 37o30' | 49 | 345 | 300 | 50 | 350 | 300 | 49 | 350 | 300 |
65 | 270 | 83 | 37o30' | 67 | 441 | 300 | 66 | 447 | 300 | 64 | 447 | 300 |
80 | 280 | 96 | 37o30' | 79 | 495 | 350 | 77 | 499 | 350 | 75 | 499 | 350 |
100 | 300 | 117 | 37o30' | 101 | 575 | 350 | 99 | 582 | 400 | 87 | 582 | 400 |
125 | 325 | 144 | 37o30' | 126 | 587 | 400 | 129 | 590 | 400 | 125 | 590 | 400 |
150 | 350 | 172 | 37o30' | 152 | 607 | 400 | 150 | 611 | 450 | 145 | 611 | 450 |
200 | 400 | 223 | 37o30' | 200 | 740 | 450 | 198 | 745 | 550 | 190 | 747 | 550 |
250 | 450 | 278 | 37o30' | 252 | 863 | 550 | 246 | 867 | 650 | 236 | 869 | 650 |
300 | 500 | 330 | 37o30' | 302 | 1008 | 650 | 294 | 1008 | 750 | 282 | 1013 | 750 |
350 | 550 | 382 | 37o30' | 350 | 1142 | 750 | 342 | 1148 | 800 | 334 | 1148 | 850 |
400 | 650 | 432 | 37o30' | 397 | 1527 | 850 | 387 | 1531 | 900 | 377 | 1533 | 950 |
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