Kunshan SYNVAC Vacuum Equipment Co.,LTD
| Feature | 90° Elbow |
| Materials | SUS304 SUS316L |
| Payment Terms | T/T, L/C |
| Packaging Details | Plastic cap+PE bag |
| Brand Name | SYNVAC |
| Model Number | KF16 KF25 KF40 KF50 |
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Product Specification
| Feature | 90° Elbow | Materials | SUS304 SUS316L |
| Payment Terms | T/T, L/C | Packaging Details | Plastic cap+PE bag |
| Brand Name | SYNVAC | Model Number | KF16 KF25 KF40 KF50 |
| High Light | SUS304 kf 40 vacuum fittings ，SUS316L kf 40 vacuum fittings ，KF 40 custom vacuum fittings | ||
KF 90° elbows are quick-flange vacuum fittings designed to redirect gas flow by 90 degrees in high-vacuum systems ranging from atmospheric pressure down to 10⁻⁸ Torr. Also known as NW 90° elbows, these components feature a 90-degree bend with smooth internal radii, KF flange connections on both ends, and vacuum-grade surface finishes to minimize outgassing and eliminate virtual leaks.
Manufactured from high-quality 304 or 316L stainless steel, KF 90° elbows are essential for vacuum chambers, pumping lines, foreline tubing, load locks, and analytical instruments. Each elbow incorporates the internationally standardized KF (Klein Flansch / Quick Flange) connection system, which uses a centering ring, elastomer O-ring, and wing nut clamp for rapid, tool-free assembly. Whether you are constructing a new vacuum manifold, modifying a deposition system, or repairing a leak detection station, these elbows deliver the conductance, reliability, and convenience that demanding high-vacuum applications require.
Bend Angle: 90 degrees (45° and custom angles also available)
Connection Type: KF (NW) flanges on both ends (same size)
Vacuum Range: Atmospheric to 1×10⁻⁸ Torr
Bend Radius: Long radius (1.5× DN) – standard
Material: 304 or 316L Stainless Steel
Internal Surface Finish: Ra ≤ 0.8 µm (electropolished or mechanically polished)
Outgassing Rate: < 2×10⁻⁸ Torr·L/s·cm² (after vacuum cleaning)
Leak Integrity: Helium leak tested to < 1×10⁻⁹ mbar·L/s
Bakeout Capability: Up to 150°C (with Viton® O-rings)
Assembly: Tool-free clamping with KF clamps and centering rings
Reusability: Fully demountable and reusable across multiple installations
Vacuum pumping lines: Connecting roughing pumps to turbo pumps or chambers
Foreline systems: 90-degree bends between backing pumps and high-vacuum pumps
Instrumentation: Redirecting flow to pressure gauges and RGAs
Thin-film deposition: Sputtering, evaporation, and ALD system plumbing
Helium leak detection: Adapter lines between test ports and detectors
Analytical instruments: Mass spectrometers, electron microscopes, surface analysis tools
R&D vacuum manifolds: Compact 90-degree turns in multi-port arrangements
Load lock systems: Interconnecting chambers with space-efficient layouts
We combine precision CNC tube bending with electropolishing and 100% helium leak testing to deliver KF elbows that meet or exceed international high-vacuum standards. Every elbow is ultrasonically cleaned with semiconductor-grade detergents, vacuum-bagged, and certified with a leak test report. Custom bend radii, reducing configurations, and special lengths are available with engineering support.
Company Details
Business Type:
Manufacturer
Year Established:
2008
Total Annual:
1.1Million-1.3Million
Employee Number:
15~18
Ecer Certification：
Verified Supplier
Kunshan SYNVAC Vacuum Equipment Co.,LTD established in 2008 , and is the member of China Vacuum Association. Locations： Sales Office: Shanghai (Shanghai) Factory 1: Kunsha... Kunshan SYNVAC Vacuum Equipment Co.,LTD established in 2008 , and is the member of China Vacuum Association. Locations： Sales Office: Shanghai (Shanghai) Factory 1: Kunsha...
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