Introduction
ASA HV Radius 90° Elbows with flat flanges are essential components in high vacuum (HV) systems, enabling smooth directional changes in vacuum pipelines while maintaining system integrity. These elbows are widely used in vacuum processing equipment, thin film deposition systems, and industrial vacuum lines where flow efficiency, sealing reliability, and structural stability are critical.
Detailed Description
ASA HV Radius 90° Elbows are designed to provide a gradual 90-degree change in pipeline direction, minimizing turbulence and conductance loss compared to sharp-angle fittings. The “radius” design ensures a smoother internal flow path, which is particularly important in vacuum environments where gas conductance directly affects system performance and pump efficiency.
The flat flange configuration follows ASA (American Standards Association) vacuum flange specifications, allowing secure and leak-tight connections with compatible flat-face sealing systems. These elbows are typically manufactured from high-quality stainless steel (such as 304L or 316L), offering excellent corrosion resistance, low outgassing rates, and compatibility with a wide range of vacuum processes.
Precision machining and welding ensure uniform wall thickness and dimensional accuracy, which are crucial for maintaining vacuum integrity under repeated thermal and mechanical stress. Surface finishing processes further reduce contamination risks, making these components suitable for clean vacuum environments.
Applications
ASA HV Radius 90° Elbows (Flat Flanges) are commonly used in:
- Thin Film Deposition Systems (PVD, CVD): Routing vacuum lines with minimal conductance loss
- Semiconductor Manufacturing Equipment: Maintaining stable vacuum conditions in process chambers
- Vacuum Furnaces: High-temperature vacuum pipelines requiring reliable sealing
- Analytical Instruments: Mass spectrometers and surface analysis systems
- Industrial Vacuum Systems: General-purpose vacuum transport and pumping lines
Technical Parameters
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Material | 304L / 316L Stainless Steel | Corrosion resistance & low outgassing |
| Nominal Size | 1″ – 12″ (custom available) | Matches pipeline requirements |
| Bend Angle | 90° | Standard directional change |
| Bend Radius | Long radius (customizable) | Reduces flow resistance |
| Flange Type | ASA Flat Flange | Ensures compatibility with ASA systems |
| Surface Finish | ≤ 0.8 μm Ra (typical) | Minimizes contamination |
| Leak Rate | ≤ 1 × 10⁻⁹ mbar·L/s | Ensures vacuum integrity |
Comparison with Related Components
| Component Type | Key Advantage | Typical Application |
|---|---|---|
| ASA Radius 90° Elbow (Flat) | Smooth flow, reduced conductance loss | High-performance vacuum systems |
| ASA Sharp 90° Elbow | Compact design | Space-limited systems |
| KF 90° Elbow | Quick assembly/disassembly | Laboratory vacuum setups |
| CF 90° Elbow | Ultra-high vacuum compatibility | UHV and research systems |
FAQ
| Question | Answer |
|---|---|
| Can the elbow size be customized? | Yes, a wide range of diameters and radii can be manufactured according to system requirements. |
| What is the advantage of a radius elbow over a sharp elbow? | Radius elbows reduce turbulence and improve vacuum conductance, enhancing system efficiency. |
| Are these elbows suitable for high-temperature applications? | Yes, especially when made from 316L stainless steel, they can withstand elevated temperatures. |
| What sealing method is used with flat flanges? | Flat flanges typically use gaskets such as elastomer or metal seals depending on the vacuum level. |
| Can surface finishing be customized? | Yes, electropolishing or enhanced surface treatments can be provided for cleaner environments. |
Packaging
Our ASA HV Radius 90° Elbows (Flat Flanges) are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent any potential damage during storage and transportation, ensuring the components arrive in perfect condition.
Conclusion
ASA HV Radius 90° Elbows (Flat Flanges) provide a reliable and efficient solution for directing vacuum flow while maintaining system performance and integrity. With high-quality materials, precision manufacturing, and customizable options, they are well-suited for a wide range of vacuum applications.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.
Ordering Table
| Flange Size/OD | Type | Drawing | Nominal Tube OD | Dim A | Part Number |
| ASA 1 (4.25" OD) | Fixed |
| 1-1/2 | 2.66 | AFER04X15 |
| ASA 1 (4.25" OD) | Rotatable |
| 1-1/2 | 2.66 | AFER04X15R |
| ASA 1.5 (5.00" OD) | Fixed |
| 2 | 3.25 | AFER05X20 |
| ASA 1.5 (5.00" OD) | Rotatable |
| 2 | 3.25 | AFER05X20R |
| ASA 2 (6.00" OD) | Fixed |
| 3 | 4.75 | AFER06X30 |
| ASA 2 (6.00" OD) | Rotatable |
| 3 | 4.75 | AFER06X30R |
| ASA 3 (7.50" OD) | Fixed |
| 4 | 6.25 | AFER07X40 |
| ASA 3 (7.50" OD) | Rotatable |
| 4 | 6.25 | AFER07X40R |
| ASA 4 (9.00" OD) | Fixed |
| 4 | 6.25 | AFER09X40 |
| ASA 4 (9.00" OD) | Rotatable |
| 4 | 6.25 | AFER09X40R |
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