Introduction
Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric) are precision vacuum components designed to transition between two different metric CF flange sizes without adding tube length. This compact, face-to-face reducer preserves conductance, minimizes virtual leaks, and maintains ultra-high-vacuum (UHV) integrity—a critical requirement for space-constrained systems in semiconductor processing, surface science, and advanced research tools.
Detailed Description
Zero-length CF reducers integrate two CF knife-edge sealing faces into a single, rigid body—eliminating intermediate tubing and unnecessary dead volume. Manufactured from vacuum-grade stainless steel (typically 304L or 316LN), these reducers deliver excellent corrosion resistance, low outgassing, and long-term dimensional stability.
Precision machining of the knife edges ensures reliable metal-to-metal sealing with standard copper gaskets. The metric pattern aligns seamlessly with European and global UHV standards, simplifying integration across mixed-size CF assemblies while preserving bakeability and repeatable sealing performance.
Key benefits include:
No added length for maximum conductance and compact layouts
Dual knife-edge faces for true UHV sealing
Robust monolithic construction to reduce virtual leaks
Metric compatibility across standard CF sizes
Applications
UHV chambers and beamlines
Thin film deposition systems (PVD, sputtering, evaporation)
Semiconductor process equipment and load-locks
Surface analysis tools (XPS, AES, SEM interfaces)
Research vacuum manifolds requiring compact transitions
Technical Parameters
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Flange Standard | ConFlat® (CF), Metric | UHV-compatible knife-edge seal |
| Configuration | Zero-length reducer | Preserves conductance & space |
| Material | 304L / 316LN Stainless Steel | Low outgassing, corrosion resistance |
| Sealing | Copper gasket (OFHC) | Reliable UHV sealing |
| Sizes | Metric CF size combinations (custom available) | System compatibility |
| Bakeout | Up to ~450 °C (with copper gaskets) | UHV readiness |
| Leak Rate | ≤ 1×10⁻¹⁰ mbar·L/s (typical) | Maintains UHV integrity |
Comparison with Related CF Components
| Component | Key Advantage | Typical Application |
|---|---|---|
| Zero-Length CF Reducer (Metric) | Compact, no added volume | Space-limited UHV systems |
| CF Reducer with Tube | Easier alignment | General transitions |
| CF Tee / Cross | Multiple ports | Manifolds & diagnostics |
FAQ
| Question | Answer |
|---|---|
| Does “zero-length” truly add no tube section? | Yes—only the two sealing faces are integrated into one body. |
| Are copper gaskets included? | Typically supplied separately unless requested as a kit. |
| Is this suitable for repeated bake cycles? | Yes, within standard CF bake limits using copper gaskets. |
| Can mixed metric sizes be customized? | Yes, custom size combinations and finishes are available. |
| What surface finishes are offered? | Standard machined; electropolish available on request. |
Packaging
Our Zero-Length Reducer CF UHV Flanges (Metric) are cleaned for vacuum service, knife edges protected with caps, and individually packed. Export-grade cushioning and cartons or wooden crates ensure damage-free delivery.
Conclusion
Zero-Length Reducer ConFlat® (CF) UHV Flanges (Metric) provide a compact, leak-tight solution for transitioning between metric CF sizes without compromising conductance or UHV performance. With precision machining, robust materials, and customization options, they are ideal for high-end vacuum systems where space and cleanliness matter.
For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.
Reviews
There are no reviews yet.