Introduction
ASA HV Tees (Grooved Flanges) are high-vacuum connection components designed for reliable pipeline branching in medium and high vacuum systems. Featuring standardized grooved flange interfaces, these tees enable quick assembly, secure sealing, and excellent vacuum integrity across research laboratories and industrial vacuum installations.
Widely used in thin film deposition systems, vacuum furnaces, semiconductor processing lines, and analytical instruments, ASA HV Tees provide structural flexibility while maintaining consistent vacuum performance.
Detailed Description
ASA high vacuum tees are typically manufactured from 304L or 316L stainless steel, ensuring mechanical strength, corrosion resistance, and low outgassing characteristics. The grooved flange design allows for elastomer O-ring sealing combined with clamp connections, offering a balance between vacuum tightness and rapid installation.
Key structural features include:
Precision-machined grooved flange sealing surfaces
Smooth internal bore for reduced flow resistance
TIG-welded construction for structural integrity
Leak-tight performance suitable for high vacuum ranges
The tee configuration enables perpendicular branch connections, commonly used to integrate gauges, valves, pumps, or additional process chambers. Surface finishing and welding quality are carefully controlled to minimize virtual leaks and particle contamination.
ASA grooved flange systems are particularly advantageous in applications where frequent maintenance or reconfiguration is required, as they allow faster assembly compared to knife-edge metal seal flanges.
Applications
ASA HV Tees (Grooved Flanges) are widely used in:
Thin Film Deposition Systems
Sputtering, evaporation, and CVD systems requiring branch vacuum lines.Vacuum Furnaces
Gas inlet and pressure monitoring connections.Semiconductor Processing Equipment
Integration of pumps, valves, and diagnostic components.Analytical Instruments
Mass spectrometers and surface analysis systems.Research Laboratory Vacuum Lines
Modular vacuum setups requiring flexible expansion.Industrial Vacuum Systems
Coating lines and vacuum packaging equipment.
Technical Parameters
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Material | 304L / 316L Stainless Steel | Corrosion resistance & structural strength |
| Surface Finish | ≤ Ra 0.8 µm (internal typical) | Reduces outgassing & particle retention |
| Nominal Sizes | DN16 – DN100 (custom available) | Matches standard vacuum piping |
| Sealing Type | O-ring (Elastomer) | Ensures vacuum tightness |
| Vacuum Range | 10⁻⁶ mbar typical (system dependent) | Suitable for high vacuum |
| Leak Rate | ≤ 1 × 10⁻⁹ mbar·L/s | Ensures system integrity |
Comparison with Related Flange Types
| Flange Type | Key Advantage | Typical Application |
|---|---|---|
| ASA HV Grooved Flange | Quick assembly, cost-effective sealing | Laboratory & general HV systems |
| CF (ConFlat) Flange | Metal-to-metal UHV sealing | Ultra-high vacuum systems |
| KF (Quick Flange) | Rapid clamp connection | Foreline & rough vacuum |
| ISO Flange | Large diameter vacuum lines | Industrial vacuum systems |
ASA grooved flanges are typically selected when high vacuum performance is required along with ease of maintenance and moderate cost.
FAQ
| Question | Answer |
|---|---|
| What vacuum level can ASA HV tees achieve? | They are suitable for high vacuum applications, typically down to 10⁻⁶ mbar, depending on system conditions. |
| Are custom sizes available? | Yes, custom diameters and configurations can be manufactured upon request. |
| What material is recommended for corrosive environments? | 316L stainless steel is recommended for improved corrosion resistance. |
| Are helium leak tests available? | Yes, helium leak testing can be provided upon request. |
| How are they packaged? | Each component is cleaned, sealed, and packed in protective materials to prevent contamination or damage. |
Packaging
Our ASA HV Tees (Grooved 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 fittings arrive in perfect condition.
Conclusion
ASA HV Tees (Grooved Flanges) provide a dependable and flexible solution for branching connections in high vacuum systems. With precision machining, reliable sealing performance, and customizable configurations, they are well suited for deposition systems, research laboratories, and industrial vacuum applications.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.
Ordering Table
| Flange Size/OD | Drawing | Nominal Tube OD | Dim A | Part Number |
| ASA 1 (4.25" OD) |
| 1-1/2 | 2.5 | AFT04X15G5R |
| ASA 1.5 (5.00" OD) |
| 2 | 3.25 | AFT05X20G5R |
| ASA 1.5 (5.00" OD) |
| 2-1/2 | 3.25 | AFT05X25G5R |
| ASA 2 (6.00" OD) |
| 3 | 3.5 | AFT06X30G5R |
| ASA 3 (7.50" OD) |
| 4 | 5.12 | AFT07X40G5R |
| ASA 4 (9.00" OD) |
| 4 | 5.12 | AFT09X40G5R |
| ASA 4 (9.00" OD) |
| 6 | 5.25 | AFT09X60G5R |
| ASA 6 (11.00" OD) |
| 6 | 6.44 | AFT11X60G5R |
| ASA 6 (11.00" OD) |
| 8 | 7.38 | AFT11X80G5R |
| ASA 8 (13.50" OD) |
| 10 | 9.88 | AFT13X10G5R |
| ASA 8 (13.50" OD) |
| 8 | 7.75 | AFT13X80G5R |
| ASA 10 (16.00" OD) |
| 10 | 9.88 | AFT16X10G5R |
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