Pneumatic Flange Butterfly Valve
I. Introduction:
The D643H pneumatic flange butterfly valve has driving forms including manual, worm gear drive, pneumatic, hydraulic, electric, and electro-hydraulic linkage actuators, enabling remote control and automated operation. The metal hard-sealed butterfly valve series is a long-life, energy-saving butterfly valve. Its structure is designed using the three-eccentric principle, and the valve seat adopts a multi-layer structure compatible with hard and soft sealing, with exquisite processing and advanced technology. This product is composed of main components such as the valve body, butterfly plate, multi-layer valve seat, valve stem, and transmission mechanism, so it is widely used in pipelines conveying corrosive media such as metallurgy, electric power, petroleum, chemical industry, air, coal gas, combustible gas, and water supply and drainage.
II. Features:
1. Small opening torque, flexible and convenient, labor-saving and energy-saving.
2. Three-eccentric structure makes the butterfly plate tighter when closing, ensuring reliable sealing performance and achieving zero leakage.
3. High pressure resistance, corrosion resistance, wear resistance, long service life, etc.
III. Applicable Standards:
Design Standards: GB/T12238-1989; JB/T8527-1997
Flange Connection Dimensions:
GB/T9113.1-2000; GB/T9113.2-2000
GB/T9115.1-2000; GB/T9115.2-2000
Structure Length: GB/T12221-1989
Pressure Test: GB/T13927-1992; JB/T9092-1999
IV. Parts:
Part Name | Material |
Valve Body | WCB, Alloy Steel, Stainless Steel, QT450-10 |
Butterfly Plate | WCB, Alloy Steel, Stainless Steel, QT450-10 |
Valve Shaft | 2Cr13 Stainless Steel, Alloy Steel |
Seal Ring | Stainless Steel Ring |
Packing | Flexible Graphite |
V. Technical Parameters:
Nominal Diameter DN (mm) | 50～2000 | |||
Nominal Pressure PN (MPa) | 0.6 | 1.0 | 1.6 | 2.5 |
Seal Test (MPa) | 0.66 | 1.1 | 1.76 | 2.75 |
Strength Test (MPa) | 0.9 | 1.5 | 2.4 | 3.75 |
Applicable Temperature | Carbon Steel: -29℃～425℃; Stainless Steel: -40℃～650℃ | |||
Applicable Medium | Water, Air, Natural Gas, Oil Products and Weakly Corrosive Fluids | |||
Leakage Rate | Compliant with GB/T13927-92 Standard | |||
Driving Mode | Worm Gear Drive, Electric, Pneumatic, Hydraulic | |||
| Machinery & Equipment/Valves/Butterfly Valves | |
