KF Flange to Female NPT Adapter
We offer a comprehensive range of sizes to ensure full compatibility with your existing vacuum hardware. Each unit undergoes rigorous Helium Leak Testing to guarantee performance in ultra-high vacuum (UHV) environments.
Technical Specifications
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Material Grades: |
Available in high-purity 304 Stainless Steel (standard) and 316L Stainless Steel (for enhanced chemical resistance). |
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Flange Standards: |
ISO-KF NW10, NW16, NW25, NW40, and NW50. |
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Thread Sizes: |
Internal NPT threads ranging from 1/8", 1/4", 3/8", 1/2", 3/4" to 1". |
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Surface Finish: |
Mirror-polished or satin finish (Ra < 0.8μm) to minimize outgassing and contamination. |
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Operating Range: |
Rated from full vacuum (10⁻⁸ mbar) up to 15 Bar (217 PSI) pressure. |
Why Choose Our Vacuum Flange Adapters?
Our adapters are more than just pipe fittings; they are precision-engineered tools designed for durability:
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Reliable Hermetic Sealing: |
The CNC-machined flange face provides a perfect mating surface for centering rings and clamps, achieving a leak rate of <1×10⁻⁹ mbar·l/s. |
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Corrosion & Heat Resistance: |
Built for longevity, our 316L options withstand corrosive gases and high-temperature bake-out cycles common in semiconductor processing. |
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Seamless Integration: |
Designed according to ISO 2861 standards, ensuring these fittings are 100% interchangeable with brands like Edwards, Leybold, and Pfeiffer. |
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Rapid Installation: |
The "Quick Flange" design allows for tool-free assembly, significantly reducing maintenance downtime. |
Versatile Industrial Applications
As a critical link in vacuum plumbing, these KF to NPT connectors are widely utilized across various high-tech sectors:
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Semiconductor & Solar: |
For gas distribution manifolds and vacuum chamber ports. |
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Laboratory Research: |
Connecting vacuum gauges, sensors, and pumps to analytical instruments (Mass Spec, SEM). |
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Pharmaceutical & Food |
Sanitary-grade fluid transfer and freeze-drying (Lyophilization) processes. |
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Industrial Vacuum: |
Ideal for vacuum packaging, leak detection systems, and thin-film coating. |
Logistics & Quality Commitment
We understand that timely delivery is as crucial as product quality.
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Packaging: |
Every adapter is ultrasonically cleaned, then sealed in an individual PE bag to maintain purity, and finally packed in reinforced export cartons. |
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OEM/ODM Service: |
Need a custom KF40 to 1.5" NPT or a specific alloy? Our engineering team provides custom CAD designs and rapid prototyping. |
Frequently Asked Questions (FAQ)
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Q1: |
Can I use these for liquid high-pressure lines? |
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A1: |
While primarily designed for vacuum, they safely handle up to 15 bar. For higher pressures, please consult our technical team for heavy-wall custom options. |
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Q2: |
Do you offer NPT to Metric (G/BSP) adapters? |
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A2: |
Yes, we manufacture a full range of thread converters, including BSPP and BSPT, to meet international standards. |
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Q3: |
What is your standard lead time for bulk orders? |
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A3: |
Most standard sizes (KF16/KF25) are in stock. Bulk production typically takes 7-15 working days. |
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