BD343H PN16 Flanged Metal Seated Jacketed Butterfly Valve
WDL Valve BD343H flanged jacketed butterfly valve features a triple-offset metal-seated design with an external heating jacket. Steam or hot gas can circulate through the jacket to help prevent the process medium from solidifying or crystallizing.
- Models: BD343H, BD343Y and BD343WC
- Size Range: DN50–DN2000
- Pressure Rating: PN16
- Temperature Range: -29°C to 425°C
- Design: Triple-offset metal-seated butterfly valve
- Operation: Gear, pneumatic or electric actuator
- Applications: Solidifying, crystallizing and high-viscosity media
Description
BD343H Flanged Metal Seated Jacketed Butterfly Valve
The WDL Valve flanged jacketed butterfly valve is based on a triple-offset metal-seated butterfly valve with a welded heating jacket around the valve body. Jacket connections installed on both sides allow steam or another compatible hot gas to circulate around the body.
Continuous external heating helps maintain the temperature of process media that may solidify, crystallize or become highly viscous at ambient temperature. The design is commonly used in petroleum, chemical, pharmaceutical, metallurgical and other process systems.
Because of the external jacket, the connecting flanges may be one or two nominal sizes larger than those of a conventional metal-seated butterfly valve. Final flange dimensions must therefore be confirmed using the approved WDL Valve drawing.
Model and Actuation Options
| Model Series | Operation | Available Variants |
|---|---|---|
| BD343 | Manual worm gearbox | BD343H, BD343Y, BD343WC |
| BD643 | Pneumatic actuator | BD643H, BD643Y, BD643WC |
| BD943 | Electric actuator | BD943H, BD943Y, BD943WC |
Technical Specifications
| Manufacturer | WDL Valve |
|---|---|
| Product Type | Flanged metal-seated jacketed butterfly valve |
| Design | Triple-offset butterfly valve with external heating jacket |
| Nominal Size | DN50–DN2000 |
| Pressure Rating | PN16 |
| Temperature Range | -29°C to 425°C, depending on material and sealing configuration |
| Connection | Flanged ends |
| Jacket Heating Medium | Steam or compatible hot gas |
| Process Media | Media prone to solidification, crystallization or viscosity increase |
| Operating Options | Worm gearbox, pneumatic actuator or electric actuator |
Applicable Standards
| Item | Standard |
|---|---|
| Design and Manufacture | API 609 or applicable butterfly valve specification |
| Face-to-Face Dimensions | ISO 5752 or approved manufacturer drawing |
| Flange Dimensions | GB/T 9113, ASME B16.5 or ASME B16.47 where applicable |
| Inspection and Testing | GB/T 13927 or API 598 |
Materials of Construction
| Component | Available Materials |
|---|---|
| Valve Body | WCB, CF8, CF8M, chrome-moly steel, low-temperature steel, nickel alloy, Monel or duplex stainless steel |
| Valve Disc | WCB, CF8, CF8M, chrome-moly steel, low-temperature steel, nickel alloy, Monel or duplex stainless steel |
| Valve Stem | 2Cr13, F304, F316, chrome-moly steel, low-temperature steel, nickel alloy or Monel |
| Sealing Surface | Stainless steel with flexible graphite, stainless steel, Stellite, tungsten carbide, nickel alloy or Monel |
| Packing | Flexible graphite |
Base Dimensions
| DN | NPS | Short L (mm) | Long L (mm) | H (mm) |
|---|---|---|---|---|
| 50 | 2″ | 108 | 150 | 112 |
| 65 | 2-1/2″ | 112 | 170 | 115 |
| 80 | 3″ | 114 | 180 | 120 |
| 100 | 4″ | 127 | 190 | 138 |
| 125 | 5″ | 140 | 200 | 164 |
| 150 | 6″ | 140 | 210 | 175 |
| 200 | 8″ | 152 | 230 | 200 |
| 250 | 10″ | 165 | 250 | 243 |
| 300 | 12″ | 178 | 270 | 250 |
| 350 | 14″ | 190 | 290 | 280 |
| 400 | 16″ | 216 | 310 | 305 |
| 450 | 18″ | 222 | 330 | 350 |
| 500 | 20″ | 229 | 350 | 380 |
| 600 | 24″ | 267 | 390 | 445 |
| 700 | 28″ | 292 | 430 | 480 |
| 800 | 32″ | 318 | 470 | 530 |
| 900 | 36″ | 330 | 510 | 580 |
| 1000 | 40″ | 410 | 550 | 650 |
| 1200 | 48″ | 470 | 630 | 760 |
| 1400 | 56″ | 530 | 710 | 850 |
| 1600 | 64″ | 600 | 790 | 1030 |
| 1800 | 72″ | 670 | 870 | 1230 |
| 2000 | 80″ | 760 | 950 | 1350 |
Actuator Envelope Dimensions
| DN | BD343 Gear Operated | BD643 Pneumatic | BD943 Electric | ||||||
|---|---|---|---|---|---|---|---|---|---|
| H1 | A1 | B1 | H2 | A2 | B2 | H3 | A3 | B3 | |
| 50 | 350 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 |
| 65 | 370 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 |
| 80 | 380 | 180 | 200 | 645 | 245 | 72 | 565 | 250 | 255 |
| 100 | 420 | 180 | 200 | 675 | 355 | 92 | 600 | 250 | 255 |
| 125 | 460 | 180 | 200 | 715 | 355 | 92 | 640 | 250 | 255 |
| 150 | 555 | 270 | 280 | 800 | 355 | 92 | 705 | 300 | 315 |
| 200 | 760 | 400 | 425 | 850 | 250 | 170 | 775 | 300 | 315 |
| 250 | 830 | 400 | 425 | 925 | 250 | 170 | 945 | 300 | 315 |
| 300 | 895 | 450 | 560 | 1035 | 450 | 220 | 1070 | 300 | 315 |
| 350 | 950 | 450 | 560 | 1075 | 450 | 220 | 1140 | 300 | 315 |
| 400 | 1190 | 535 | 580 | 1190 | 450 | 220 | 1210 | 300 | 315 |
| 450 | 1255 | 535 | 580 | 1250 | 650 | 280 | 1335 | 575 | 714 |
| 500 | 1305 | 535 | 580 | 1290 | 650 | 280 | 1415 | 575 | 714 |
| 600 | 1340 | 570 | 660 | 1455 | 850 | 380 | 1605 | 656 | 810 |
| 700 | 1520 | 750 | 550 | 1585 | 850 | 380 | 1844 | 656 | 810 |
| 800 | 1710 | 750 | 550 | 1700 | 1250 | 380 | 2040 | 656 | 810 |
| 900 | 1810 | 750 | 550 | 1965 | 1250 | 380 | 2255 | 785 | 863 |
| 1000 | 1960 | 900 | 750 | 2015 | 1250 | 380 | 2380 | 785 | 863 |
| 1200 | 2250 | 1000 | 925 | 2250 | 1250 | 380 | 2640 | 785 | 863 |
| 1400 | 2435 | 1000 | 925 | — | — | — | 2886 | — | — |
| 1600 | 2780 | 1000 | 925 | — | — | — | 3156 | — | — |
| 1800 | 3020 | 1100 | 980 | — | — | — | 3421 | — | — |
| 2000 | 3270 | 1100 | 980 | — | — | — | 3685 | — | — |
All actuator envelope dimensions are reference values in millimetres. Actual dimensions depend on the selected gearbox, pneumatic actuator or electric actuator.
How the Heating Jacket Works
Steam or compatible hot gas enters the external jacket through one jacket connection and circulates around the valve body before leaving through the opposite connection. Heat transferred through the valve body helps maintain the process medium above its solidification or crystallization temperature.
The required jacket pressure, heating-medium temperature and connection size must be confirmed according to the process conditions. The jacket heating medium must remain separate from the process medium.
Key Product Features
- Triple-offset geometry reduces rubbing between the disc and seat.
- Metal-seated construction supports elevated-temperature applications.
- External heating jacket helps prevent solidification and crystallization.
- Streamlined disc design provides bidirectional flow capability when specified.
- Worm gear, pneumatic and electric operating options are available.
- Multiple body, disc, stem and hard-facing materials are available.
- Large size range from DN50 to DN2000.
- Custom jacket connections and flange dimensions can be supplied.
Typical Applications
- Heavy oil, asphalt and bitumen pipelines
- Sulfur and molten process media
- Resin, polymer and adhesive systems
- Wax-containing and crystallizing media
- Petroleum refining and petrochemical plants
- Chemical and pharmaceutical processing
- Metallurgical and high-temperature process systems
Ordering Information
When requesting a quotation, please provide the nominal size, operating pressure, process medium, medium temperature, required body and trim materials, actuator type, jacket heating medium, jacket pressure and connection dimensions.
Dimensions, materials, pressure-temperature limits, actuator selection and jacket connection details are subject to the final approved WDL Valve drawing and technical datasheet.
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