Electric Ventilation Butterfly Valve
Automated flow-control valve for industrial ventilation. Modulates gas flow through 90° rotation, with 4–20 mA analog input and PLC integration for remote operation.
Features
- Welded steel-plate body and disc — lightweight, compact, easy to install.
- Generous disc-to-body expansion clearance prevents seizing under thermal cycling.
- No internal linkages or fasteners — reliable operation and long service life.
- Low operating torque; smooth, friction-free actuation.
- Multi-position, non-directional installation — unaffected by media flow direction.
- Concentric centerline disc in a compact welded steel-plate body accommodates high-temperature expansion for low-torque operation.
- On/off, isolation and flow control for ventilation, HVAC and high-temperature flue-gas service.
- Low-pressure air/gas flow and pressure control; suitable for high-temperature and corrosive media.
Basic Parameters
Operating Power:
AC110V, AC220V, AC380V, DC24V
Nominal Diameter (DN):
DN40～DN500
Medium Temperature:
-50℃～160℃ (Non-freezing)
Working Pressure (PN):
1.0～1.6 MPa
Control Method:
Modulating or On/Off Control
Pneumatic Action Mode:
- Single Acting (with spring return)
- Double Acting
Connection Type:
Wafer Type
Material Specifications
Body & Internal Components
Valve Body Material:
WCB, QT450-10, HT200, HT250
Valve Disc Material:
WCB + PTFE
Seal Ring Material:
PTFE
Actuator Material:
Cast Aluminum Alloy
Suitable Media
- Sulfuric acid
- hydrofluoric acid
- phosphoric acid
- chlorine gas
- strong alkali
- aqua regia
- any other highly corrosive media
Standards Compliance
Design & Manufacturing:
GB/T 12238-2008
API 6D
Flange:
JB/T 79-2015
GB/T 9124.1-2019
GB/T 9124.2-2019
ASME B16.5
JIS B2239
Structure Length:
GB/T 12221-2005
Inspection:
API 598
Main Parameters
| Nominal Diameter | DN50～DN2000 |
| Power Supply | AC110V, AC220V, AC380V, DC24V |
| Medium Temperature | 0-450℃ (Optional) |
| Nominal Pressure | 0.1～0.6MPa |
| Applicable Medium | Dust-containing flue gas, air, gas |
| Connection Type | Flanged |
| Flow Characteristic | Linear / Equal percentage characteristic |
| Control Mode | Regulating or On-off control |
| Sealing Type | Open type, Back seat type (Suitable for ultra-high temperature), Sealed type (Suitable for normal temperature) |
| Test Pressure | Shell test: 0.15MPa |
| Seal test: 0.11MPa | |
| Valve Body Material | A3 steel, Heat-resistant steel, SUS304 stainless steel, SUS316 stainless steel |
| Valve Plate Material | A3 steel, Heat-resistant steel, SUS304 stainless steel, SUS316 stainless steel |
| Packing Material | PTFE lining, Graphite |
| Protection Grade | IP67 |
| Manufacturing Standard | JB/T 8692-2013 |
| Product Design and Manufacturing | GB/T12238-2008, API 609 |
| Product Inspection and Test | GB/T13927-2022, API 598 |
| Side Flange Connection | GB/T 9124.1-2019, GB/T 9124.2-2019, ASME B16.50, ASME B16.47 |
Dimension Drawing
1.Wafer Type pneumatic PTFE Lined Butterfly Valve
| Nominal Diameter | L | D | N-ΦD | H2 | Double Acting | Single Acting | ||||
| H1 | W1 | W2 | H1 | W1 | W2 | |||||
| mm | ||||||||||
| 40 | 33 | 115 | 4-Φ16 | 60 | 246 | 147 | 72 | 262 | 168 | 83 |
| 50 | 43 | 125 | 4-Φ18 | 70 | 272 | 168 | 83 | 284 | 184 | 95 |
| 65 | 46 | 145 | 4-Φ18 | 80 | 297 | 184 | 95 | 314 | 262 | 109 |
| 80 | 46 | 160 | 8-Φ18 | 89 | 328 | 204 | 103 | 352 | 268 | 122 |
| 100 | 52 | 180 | 8-Φ18 | 105.5 | 353 | 262 | 109 | 411 | 301 | 142 |
| 125 | 56 | 210 | 8-Φ18 | 121 | 376 | 262 | 109 | 434 | 301 | 142 |
| 150 | 56 | 240 | 8-Φ22 | 145 | 407 | 268 | 122 | 466 | 390 | 152 |
| 200 | 60 | 295 | 12-Φ22 | 177 | 487 | 301 | 144 | 529 | 458 | 174 |
| 250 | 66 | 355 | 12-Φ26 | 205 | 565 | 390 | 152 | 623 | 525 | 206 |
| 300 | 78 | 410 | 12-Φ26 | 235 | 607 | 458 | 174 | 665 | 532 | 226 |
| 350 | 78 | 470 | 16-Φ26 | 260 | 686 | 525 | 206 | 746 | 602 | 260 |
| 400 | 102 | 525 | 16-Φ30 | 299 | 735 | 525 | 206 | 795 | 602 | 260 |
2.Performance Specification for Electric Ventilation Butterfly Valve
| Nominal Diameter（DN） | DN100-DN2000 | |
| Nominal Pressure（PN） | 0.1MPa | |
| Test Pressure | Shell Test | 0.15MPa |
| Seal Test | 0.11MPa | |
| Operating Temperature | ＜200℃ Special:＜450℃ | |
| Applicable Media | Dust-laden flue gas, air, coal gas | |
3.Materials of Main Components for Electric Ventilation Butterfly Valve
| Item Name | Material |
|---|---|
| Valve Body | Q235-B, 20, 20g, etc. |
| Valve Disc | |
| Shaft | 45, 40Cr, etc. |
| Packing | YS250F, etc. |
| Handle | KTH33008 |
4.Applicable Flanges for Wafer Butterfly Valve
| Nominal Diameter (mm) | D | D1 | D2 | D3 | D4 | n-Φ | H | f | D5 | b |
| 50 | 165 | 125 | 59 | 52 | 52 | 4-Φ 18 | 20 | 3 | 62 | 8 |
| 65 | 185 | 145 | 122 | 75 | 67 | 4-Φ 18 | 20 | 3 | 78 | 8 |
| 80 | 200 | 160 | 133 | 91 | 82 | 8-Φ 18 | 20 | 3 | 91 | 8 |
| 100 | 220 | 180 | 158 | 110 | 102 | 8-Φ 18 | 22 | 3 | 116 | 8 |
| 125 | 250 | 210 | 184 | 135 | 127 | 8-Φ 18 | 22 | 3 | 142 | 8 |
| 150 | 285 | 240 | 212 | 161 | 152 | 8-Φ 22 | 24 | 3 | 170 | 10 |
| 200 | 340 | 295 | 268 | 221 | 208 | 12-Φ 22 | 26 | 3 | 221 | 10 |
| 250 | 405 | 355 | 320 | 275 | 255 | 12-Φ 26 | 29 | 3 | 275 | 10 |
| 300 | 460 | 410 | 370 | 327 | 308 | 12-Φ 26 | 32 | 4 | 326 | 14 |
| 350 | 520 | 470 | 430 | 379 | 355 | 16-Φ 26 | 34 | 4 | 358 | 14 |
| 400 | 580 | 525 | 482 | 429 | 405 | 16-Φ 30 | 36 | 4 | 409 | 14 |
| 450 | 640 | 585 | 532 | 481 | 455 | 20-Φ 30 | 38 | 4 | 460 | 16 |
| 500 | 715 | 650 | 585 | 532 | 505 | 20-Φ 33 | 42 | 4 | 511 | 16 |
| 600 | 840 | 770 | 685 | 633 | 605 | 20-Φ 36 | 44 | 5 | 613 | 18 |
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