Description
Buy Flanged Butterfly Valve D41W Series Low Pressure 0.05–0.6MPa Cast Iron Manual & Electric
The VALVEHU D41W/D341W/D941W Low Pressure Flanged Butterfly Valve is engineered to deliver reliable flow control in medium-to-low pressure applications involving flue gas, clean air, exhaust, or non-corrosive gases. As a flagship solution from VALVEHU, this industrial-grade butterfly valve is ideal for high-temperature systems, with available body materials including 304, 2520S, and 310S stainless steel, ensuring durability even under extreme heat.
This valve series covers a wide pressure range: 0.05MPa, 0.25MPa, and 0.6MPa, providing compatibility for systems with varying operational demands. Designed for nominal diameters from DN50 to DN2000, it is versatile for both small and large-scale pipeline installations. The flanged connection ensures secure mounting, while the valve can be configured with manual, worm gear, pneumatic, or electric actuators, offering adaptability for both automated and manual systems.
Leakage control meets <1.5% standards, with shell and seat tests confirming tight sealing under pressure. These valves comply with industry standards such as GB/T12238, JB/T8692, and JB/T13927, giving end users confidence in quality and performance.
Whether used in boiler systems, exhaust lines, or ventilation networks, this flanged butterfly valve delivers consistent throttling and shutoff capability across industrial applications.
If you are seeking an optimized flow control solution with long-term reliability, or you need assistance selecting the right valve, we recommend contacting our valve experts at VALVEHU in China. We are ready to support your project with technical precision and dependable supply.
Technical Specifications
- Pressure Range: 0.05MPa, 0.25MPa, 0.6MPa
- Nominal Diameter: DN50 to DN2000
- Body Material: Cast Steel, 304, 2520S, 310S
- Operating Temperature: Up to 1000°C (310S)
- Leakage Rate: Less than 1.5%
- Connection Type: Flanged Ends
- Media Compatibility: Flue gas, clean air, cold air
- Standards Compliance: GB/T12238, JB/T8692, JB/T13927
- Actuation Methods: Manual, Gear, Pneumatic, Electric
- Application: Ventilation, smoke exhaust, low-pressure flow control
Main Technical Parameters
| Nominal Diameter | DN (mm) | 50 ~ 2000 |
|---|---|---|
| Rated Pressure | PN (MPa) | 0.05 / 0.25 / 0.6 |
| Test Pressure | Shell Test (MPa) | 0.075 / 0.375 / 0.9 |
| Seal Test | ≤ 1.5% leakage rate | |
| Applicable Media | Flue gas, dusty gas, duct gas, etc. | |
| Actuation Method | Manual, worm gear, pneumatic, electric |
Applicable Media and Temperature Ranges
| Applicable Temperature | Suitable Media |
|---|---|
| Carbon Steel ≤ 400°C | High-temperature flue gas, raw flue gas, clean flue gas |
| 310 Stainless Steel ≤ 1000°C | High-temperature flue gas, raw flue gas, clean flue gas |
Main Connection Dimensions – D41W (0.5/2.5/6) bar (Unit: mm)
| Nominal Diameter | Structure Length | Overall Dimensions (Reference) | Connection Dimensions (Standard Values) – 0.05MPa & 0.25MPa | 0.6MPa | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Metric (mm) | Inch | L | H | H₀ | A | B | D | D₁ | D₂ | n–d | D | D₁ | D₂ | n–d |
| 50 | 2 | 108 | 70 | 215 | 270 | 65 | 140 | 110 | 88 | 4–14 | 140 | 110 | 88 | 4–14 |
| 65 | 2½ | 112 | 80 | 235 | 270 | 65 | 160 | 130 | 108 | 4–14 | 160 | 130 | 108 | 4–14 |
| 80 | 3 | 114 | 95 | 263 | 270 | 65 | 190 | 150 | 124 | 8–18 | 190 | 150 | 124 | 8–18 |
| 100 | 4 | 127 | 105 | 283 | 270 | 65 | 210 | 170 | 144 | 8–18 | 210 | 170 | 144 | 8–18 |
| 125 | 5 | 140 | 120 | 313 | 310 | 65 | 240 | 200 | 174 | 8–18 | 240 | 200 | 174 | 8–18 |
| 150 | 6 | 140 | 132 | 338 | 310 | 65 | 265 | 225 | 199 | 8–18 | 265 | 225 | 199 | 8–18 |
FAQ
What pressure ratings are available for this butterfly valve?
It supports 0.05MPa, 0.25MPa, and 0.6MPa, ideal for low pressure applications.
Can this valve handle high-temperature exhaust gases?
Yes, with 310S stainless steel, it operates reliably up to 1000°C.
Is it suitable for automated systems?
Absolutely, it can be fitted with pneumatic or electric actuators for full automation.
What sizes are available for this model?
It is available from DN50 to DN2000, covering a wide range of pipeline sizes.
What industries typically use this valve?
Common in HVAC, boiler exhaust, and flue gas systems across power plants and factories.
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