API GB Electric flange type ventilation butterfly valve
Usage and Features
D941W electric ventilated butterfly valve is made of the same material as the valve body into a sealing ring, and is electrically or gas driven. The applicable temperature depends on the material of the valve body, the nominal pressure is less than or equal to 0.6MPa. Generally applicable to industrial, metallurgical, environmental protection and other pipelines for ventilation to adjust the flow of media.
Main characteristics : novel design, reasonable, unique structure, light weight, quick opening and closing.Small operation force, convenient operation, labor – saving dexterity.
Adopt suitable materials to meet the low, medium and high temperature of different media and corrosive media, etc.
Adopt the standard
Design standard：GB/T 12238-1989 JB/T8692-1998
Flange connection dimensions： GB/T9115.1-2000
Structure length：GB/T 12221-1989
Pressure testing：GB/T 13927-92; JB/T 9092-1999Main technical parameters
| Nominal diameter | DN | 50～2000 | ||
| Nominal pressure | PN | 0.05 | 0.25 | 0.6 |
| Test pressure | Strength test | 0.075 | 0.375 | 0.9 |
| Seal test | ≤1.5﹪Leakage rate | |||
| Applicable medium | Gas, dust gas, flue gas, etc | |||
| Driving form | Gas drive, electric drive | |||
Material of main parts
| Part Name | material |
| Valve body | Cast steel, stainless steel, chromium nickel titanium molybdenum steel, chromium titanium molybdenum steel and other special materials |
| Butterfly plate | Cast steel, stainless steel, chromium nickel titanium molybdenum steel, chromium titanium molybdenum steel and other special materials |
| Seal circle | Same as Valve body |
| valve rod | Carbon steel, 2Cr13, stainless steel, chromium nickel titanium molybdenum steel |
| Padding | Fluorine plastic, flexible graphite |
D941W-(0.5.2.5.6) C.P.R.V series ventilation butterfly valve connection size
| Nominal diameter | Structure length | External Dimensions（Reference) | Connection dimensions（Standard values） | Refer to the weight (kg) | |||||||||
| 0.05MPa and 0.25MPa | 0.6MPa | ||||||||||||
| mm | inches | L | H | H0 | As | B | D | D1 | n-d | D | D1 | n-d | |
| 50 | 2 | 108 | 70 | 418 | 250 | 225 | 140 | 110 | 4-14 | 140 | 110 | 4-14 | 42 |
| 65 | 21/2 | 112 | 80 | 438 | 250 | 225 | 160 | 130 | 4-14 | 160 | 130 | 4-14 | 53 |
| 80 | 3 | 114 | 95 | 466 | 250 | 225 | 190 | 150 | 4-18 | 190 | 150 | 4-18 | 62 |
| 100 | 4 | 127 | 105 | 486 | 250 | 225 | 210 | 170 | 4-18 | 210 | 170 | 4-18 | 81 |
| 125 | 5 | 140 | 120 | 516 | 325 | 245 | 240 | 200 | 8-18 | 240 | 200 | 8-18 | 90 |
| 150 | 6 | 140 | 132 | 541 | 325 | 245 | 265 | 225 | 8-18 | 265 | 225 | 8-18 | 100 |
| 200 | 8 | 152 | 160 | 779 | 325 | 245 | 320 | 280 | 8-18 | 320 | 280 | 8-18 | 110 |
| 250 | 10 | 165 | 187 | 836 | 363 | 313 | 375 | 335 | 12-18 | 375 | 335 | 12-18 | 145 |
| 300 | 12 | 178 | 220 | 901 | 363 | 313 | 440 | 395 | 12-22 | 440 | 395 | 12-22 | 160 |
| 350 | 14 | 190 | 245 | 954 | 363 | 313 | 490 | 445 | 12-22 | 490 | 445 | 12-22 | 215 |
| 400 | 16 | 216 | 270 | 1003 | 363 | 313 | 540 | 495 | 16-22 | 540 | 495 | 16-22 | 230 |
| 450 | 18 | 222 | 297 | 1058 | 465 | 439 | 595 | 550 | 16-22 | 595 | 550 | 16-22 | 250 |
| 500 | 20 | 229 | 322 | 1111 | 546 | 556 | 645 | 600 | 20-22 | 645 | 600 | 20-22 | 260 |
| 600 | 24 | 267 | 377 | 1233 | 546 | 556 | 755 | 705 | 20-26 | 755 | 705 | 20-26 | 370 |
| 700 | 28 | 292 | 430 | 1338 | 546 | 556 | 860 | 810 | 24-26 | 860 | 810 | 24-26 | 400 |
| 800 | 32 | 318 | 487 | 1452 | 546 | 556 | 975 | 920 | 24-30 | 975 | 920 | 24-30 | 560 |
| 900 | 36 | 330 | 537 | 1588 | 632 | 706 | 1075 | 1020 | 24-30 | 1075 | 1020 | 24-30 | 580 |
| 1000 | 40 | 410 | 587 | 1689 | 632 | 706 | 1175 | 1120 | 28-30 | 1175 | 1120 | 28-30 | 660 |
| 1200 | 48 | 470 | 702 | 1938 | 632 | 706 | 1375 | 1320 | 32-30 | 1405 | 1340 | 32-33 | 950 |
| 1400 | 56 | 530 | 782 | 2670 | 790 | 1338 | 1575 | 1520 | 36-30 | 1630 | 1560 | 36-36 | 1280 |
| 1600 | 64 | 600 | 895 | 2810 | 868 | 1476 | 1790 | 1730 | 40-30 | 1830 | 1760 | 40-36 | 1510 |
| 1800 | 72 | 670 | 995 | 3020 | 868 | 1476 | 1990 | 1930 | 44-30 | 2045 | 1970 | 44-39 | 2500 |
| 2000 | 80 | 760 | 1095 | 3220 | 965 | 1600 | 2190 | 2130 | 48-30 | 2265 | 2180 | 48-42 | 2900 |
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