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Wedge gate valve is used for pipelines to connect or cut off medium in petroleum and thermal power.
Characteristics:
1. Compact structure. Valve has good rigidity, fluent channel and low discharge coefficient.
2. Sealing face is made of stainless steel and cemented carbide, having long service life.
3. Utilize flexible graphite packing, having reliable sealing and convenient operation.
4. Actuator: manual, pneumatic, electricity, gear operated.
5. Elastic wedge single flashboard, rigid wedge single flashboard, rigid wedge double flashboards.
Standards
Design: GB/T 12234
Length: GB/T 12221
Flange: JB/T 79
Testing & inspection: JB/T 9092
Pressure-temperature: GB/T 9131
Identification: GB/T 12220
Parameter
Nominal Pressure PN(MPa) | Body | Testing Pressure(MPa) | Upper sealing | |
Sealing(liquid) | Sealing(gas) | |||
1.6 | 2.4 | 1.8 | 0.6 | 1.8 |
2.5 | 3.8 | 2.8 | 0.6 | 2.8 |
4.0 | 6.0 | 4.4 | 0.6 | 4.4 |
6.4 | 9.6 | 7.0 | 0.6 | 7.0 |
10.0 | 15.0 | 11.0 | 0.6 | 11.0 |
16.0 | 24.0 | 18.0 | 0.6 | 18.0 |
Applicable Medium & Temperature
Body Materials | Applicable Medium | Applicable Temperature(℃) |
Carbon steel | Water, steam, oil | ≤425 |
Chromium nickel titanium steel | Nitric acid | ≤200 |
Chromium nickel molybdenum titanium steel | Acetic acid | ≤200 |
Chromium molybdenum steel | Water, steam, oil | ≤550 |
Materials
Body/bonnet | Disc/base | Stem | Stem Nut | Packing | Hand Wheel |
Carbon steel | Carbon steel+ cemented carbide/stainless steel | Chromium stainless steel | Aluminum bronze | Graphite asbestos packing | Malleable cast iron |
Chromium nickel titanium steel | Stainless steel/stainless steel + cemented carbide | Chromium nickel titanium stainless steel | Aluminum bronze | PTFE | Malleable cast iron |
Chromium nickel molybdenum titanium steel | Stainless steel/stainless steel + cemented carbide | Chromium nickel molybdenum titanium stainless steel | Aluminum bronze | PTFE | Malleable cast iron |
Chromium molybdenum steel | Alloy steel + cemented carbide | Chromium molybdenum aluminum steel | Aluminum bronze | Flexible asbestos ＋33.4 | Malleable cast iron |
Dimensions
Model | Nominal Diameter | Dimensions | Weights(㎏) | |||||||
L | D | D1 | D2 | b-f | z-фd | H | Do | |||
Z41T/W/H | 40 | 165 | 145 | 110 | 85 | 18-3 | 4-ф18 | 245 | 135 | 10 |
50 | 178 | 160 | 125 | 100 | 20-3 | 4-ф18 | 286 | 180 | 18 | |
65 | 190 | 180 | 145 | 120 | 20-3 | 4-ф18 | 320 | 180 | 22 | |
80 | 203 | 195 | 160 | 135 | 22-3 | 4-ф18 | 373 | 200 | 2735 | |
100 | 229 | 215 | 180 | 155 | 22-3 | 8-ф18 | 428 | 200 | 34 | |
125 | 254 | 245 | 210 | 185 | 24-3 | 8-ф18 | 513 | 240 | 49 | |
150 | 267 | 280 | 240 | 210 | 24-3 | 8-ф23 | 582 | 240 | 66.5 | |
200 | 330 | 335 | 295 | 265 | 26-3 | 8-ф23 | 730 | 320 | 107 | |
250 | 380 | 390 | 350 | 320 | 28-3 | 12-ф23 | 897 | 320 | 168 | |
300 | 420 | 440 | 400 | 368 | 28-4 | 12-ф23 | 1032 | 400 | 220 | |
350 | 450 | 500 | 460 | 428 | 30-4 | 16-ф23 | 1170 | 400 | 290 | |
400 | 480 | 565 | 515 | 482 | 30-4 | 16-ф25 | 1330 | 500 | 450 | |
450 | 510 | 615 | 565 | 532 | 32-4 | 20-ф25 | 1460 | 500 | 580 | |
500 | 540 | 670 | 620 | 585 | 34-4 | 20-ф25 | 1727 | 500 | 830 | |
600 | 600 | 780 | 725 | 685 | 36-5 | 20-ф30 | 2072 | 500 | 1160 | |
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Dry Ash Gate Valve
