Description
Buy Wafer & Flanged Pneumatic Butterfly Valve D673H D643H | 0–40bar | Metal Sealing | Steel or SS Body
The VALVEHU Pneumatic Metal Seated Butterfly Valve D673H/D643H is an industrial-grade valve engineered for reliable performance in demanding flow control applications. Designed with precision and built with high-quality cast steel or stainless steel bodies, this valve is suitable for aggressive media like steam, gas, oil, and air. Available in both wafer and flanged connection types, it accommodates a wide nominal diameter range from DN40 to DN1600, making it ideal for diverse installation needs.
This heavy-duty butterfly valve features a metal-to-metal sealing structure, ensuring excellent leak-tightness even under high temperatures and pressure variations. The valve is actuated pneumatically and comes with either single-acting or double-acting actuators, providing flexibility for on/off or modulating service requirements. Operating pressure ranges from 0 to 40 bar, while the actuator air supply works efficiently between 3 to 8 bar, making it compatible with standard industrial compressed air systems.
VALVEHU’s D673H and D643H models are engineered for long-lasting durability, featuring a trisectional sealing structure that ensures minimal maintenance and excellent shut-off performance. This makes them particularly well-suited for power plants, chemical processing, petrochemical lines, and other critical systems where reliability is key.
Whether you’re retrofitting an existing line or setting up a new process, this valve offers the robustness and control accuracy required in modern industrial environments. For projects that demand consistent flow control under severe conditions, these metal seated butterfly valves are a trusted solution.
If you’re exploring options for industrial-grade valves, our technical team at VALVEHU is here to assist. Contact us today for expert guidance in choosing the right butterfly valve or any other flow control product for your specific needs.
Technical Specifications
- Valve Type: Pneumatic Metal Seated Butterfly Valve
- Models: D673H (Wafer) / D643H (Flanged)
- Body Material: Cast Steel or Stainless Steel
- Sealing Type: Metal-to-Metal
- Size Range: DN40 to DN1600
- Pressure Rating: 0–40 bar
- Actuation: Pneumatic (Single or Double Acting)
- Media Compatibility: Steam, Air, Gas, Oil
- Air Supply Pressure: 3–8 bar
- Connection Types: Wafer & Flanged
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Main Overall Dimensions of Wafer Type Metal Seated Pneumatic Butterfly Valve (Unit: mm)
| Nominal Diameter (DN) | Face-to-Face (L) | Total Height (H) | D1 (PN10) | D1 (PN16) | D1 (PN25) | Bolt Pattern (PN10) n–d | Bolt Pattern (PN16) n–d | Bolt Pattern (PN25) n–d |
|---|---|---|---|---|---|---|---|---|
| 50 | 43 | 112 | 125 | 125 | 125 | 4–14 | 4–14 | 4–18 |
| 65 | 46 | 115 | 145 | 145 | 145 | 4–14 | 4–14 | 8–18 |
| 80 | 49 | 120 | 160 | 160 | 160 | 4–18 | 8–18 | 8–18 |
| 100 | 56 | 138 | 180 | 180 | 190 | 4–18 | 8–18 | 8–22 |
| 125 | 64 | 165 | 210 | 210 | 220 | 8–18 | 8–18 | 8–26 |
| 150 | 70 | 175 | 240 | 240 | 250 | 8–18 | 8–22 | 8–26 |
| 200 | 71 | 208 | 295 | 295 | 310 | 8–18 | 12–22 | 12–26 |
| 250 | 76 | 243 | 350 | 355 | 370 | 12–18 | 12–26 | 12–30 |
| 300 | 83 | 283 | 400 | 410 | 430 | 12–22 | 12–26 | 16–30 |
| 350 | 92 | 310 | 460 | 470 | 490 | 16–22 | 16–26 | 16–33 |
| 400 | 102 | 340 | 515 | 525 | 550 | 16–22 | 16–30 | 16–36 |
| 450 | 114 | 380 | 565 | 585 | 600 | 16–22 | 20–30 | 20–36 |
| 500 | 127 | 410 | 620 | 650 | 660 | 20–22 | 20–33 | 20–36 |
| 600 | 154 | 470 | 725 | 770 | 770 | 20–26 | 20–36 | 20–39 |
| 700 | 165 | 550 | 840 | 875 | 875 | 24–26 | 24–36 | 24–42 |
| 800 | 190 | 640 | 950 | 990 | 990 | 24–30 | 24–39 | 24–48 |
| 900 | 203 | 710 | 1050 | 1090 | 1090 | 24–30 | 28–39 | 28–48 |
| 1000 | 216 | 770 | 1160 | 1170 | 1210 | 28–30 | 28–48 | 28–56 |
| 1200 | 254 | 890 | 1380 | 1390 | 1420 | 32–33 | 32–48 | 32–56 |
Main Technical Specifications – Pneumatic Metal Seated Butterfly Valve
| Specification | Technical Details |
|---|---|
| Actuation Type | Single-acting: air to open/close, spring to close/open |
| Double-acting: air to open/close, valve position remains when air is off | |
| Applicable Media | Various high-temperature or contaminated liquids, gases, and oils |
| Nominal Diameter Range | 40–1600 mm |
| Connection Type | Wafer, Flanged |
| Pressure Range | 0–40 bar |
| Air Supply Pressure | 3–8 bar |
| Body Material | Cast Steel, Stainless Steel |
| Sealing Structure | Triple Eccentric |
Main Overall Dimensions of Flanged Metal Seated Pneumatic Butterfly Valve (Unit: mm)
| DN (Nominal Diameter) | L (Face-to-Face) | H (Overall Height) | D (PN16) | D (PN25) | D (PN40) | D1 (PN16) | D1 (PN25) | D1 (PN40) | n–d (PN16) | n–d (PN25) | n–d (PN40) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 108 | 277 | 165 | 165 | 165 | 125 | 125 | 125 | 4–18 | 4–18 | 4–18 |
| 65 | 112 | 287 | 185 | 185 | 185 | 145 | 145 | 145 | 4–18 | 8–18 | 8–18 |
| 80 | 114 | 365 | 200 | 200 | 200 | 160 | 160 | 160 | 8–18 | 8–18 | 8–18 |
| 100 | 127 | 420 | 220 | 235 | 235 | 180 | 190 | 190 | 8–18 | 8–22 | 8–22 |
| 125 | 140 | 436 | 250 | 270 | 270 | 210 | 220 | 220 | 8–18 | 8–26 | 8–26 |
| 150 | 140 | 466 | 285 | 300 | 300 | 240 | 250 | 250 | 8–22 | 8–26 | 8–26 |
| 200 | 152 | 593 | 340 | 360 | 375 | 295 | 310 | 320 | 12–22 | 12–26 | 12–30 |
| 250 | 165 | 682 | 405 | 425 | 450 | 355 | 370 | 385 | 12–26 | 12–30 | 12–33 |
| 300 | 178 | 725 | 460 | 485 | 515 | 410 | 430 | 450 | 12–26 | 16–30 | 16–33 |
| 350 | 190 | 832 | 520 | 555 | 580 | 470 | 490 | 510 | 16–26 | 16–33 | 16–36 |
| 400 | 216 | 862 | 580 | 620 | 660 | 525 | 550 | 585 | 16–30 | 16–36 | 16–39 |
| 450 | 222 | 945 | 640 | 670 | 685 | 585 | 640 | 610 | 20–30 | 20–36 | 20–39 |
| 500 | 229 | 1058 | 715 | 730 | 755 | 650 | 660 | 670 | 20–33 | 20–36 | 20–42 |
| 600 | 267 | 1108 | 840 | 845 | 890 | 770 | 770 | 795 | 20–36 | 20–39 | 20–48 |
| 700 | 292 | 1170 | 910 | 960 | – | 840 | 875 | – | 24–36 | 24–42 | – |
| 800 | 318 | 1325 | 1025 | 1085 | – | 950 | 990 | – | 24–39 | 24–48 | – |
FAQ
What is the pressure rating of the D673H/D643H butterfly valve?
It supports pressures up to 40 bar, suitable for high-demand industrial systems.
Is this butterfly valve suitable for steam or gas applications?
Yes, it is designed for use with steam, gas, oil, and compressed air.
What are the actuator options for this butterfly valve?
It is available with pneumatic single-acting or double-acting actuators.
What body materials are offered for this model?
Customers can choose between cast steel and stainless steel, based on media compatibility.
What sizes are available for the VALVEHU metal seated butterfly valve?
The available range spans from DN40 to DN1600, covering most industrial needs.
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