Stainless Steel LN2 VCR4 KF40 Cryogenic Vacuum Feedthrough – Coaxial Double-Wall Design for UHV Liquid Nitrogen Transfer, Leak Rate <1×10⁻¹¹ Pa·m³/s
Features
- Medium: LN2 (liquid nitrogen): used to achieve deep cooling, with a much faster cooling speed than ordinary water cooling.
- Core structure: Double layer coaxial design: This is the key technology for liquid nitrogen feedthrough. It adopts an inner and outer double-layer tube structure, with a vacuum interlayer in the middle serving as an insulation barrier, which can effectively prevent external pipeline icing and protect the sealing of the KF flange from frost damage.
Application
Main application scenarios
This type of feedthrough is widely used in applications that require precise low-temperature control, such as semiconductor manufacturing, superconducting research, cryogenic pumps, particle accelerators, and aerospace thermal management systems.
Specifications
- Vacuum end interface: KF40 (ISO-KF NW-40): The flange size is NW-40, which is a quick install high vacuum flange. Combined with specialized clamps and centering brackets, it can achieve a vacuum seal of 10 ⁻⁸ mbar level, and is easy to disassemble and assemble.
- Fluid interface: VCR4 (1/4 inch VCR): Fluid pipeline interface on the vacuum side. VCR connectors are sealed with metal gaskets, resulting in extremely low leakage rates (<1 × 10 ⁻¹¹ Pa · m ³/s), making them ideal for ultra-high vacuum and low-temperature environments.
Technical parameters and material selection
According to data from similar products, this type of feedthrough pipeline usually uses 304 stainless steel with a diameter of 1/4 inch (6.35mm). In addition to VCR connectors, you can also choose between Swagelok compression connectors or direct welding according to your needs.
