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Pfeiffer Vacuum Valves & Engineering's line of liquid nitrogen feedthroughs includes the most commonly required for medium, high, and ultra-high vacuum applications. Dual and single liquid nitrogen feedthroughs are constructed with coaxial tube geometries and are available without fittings or terminated with industry-standard Swagelok or Cajon VCR fittings. A thermal barrier effectively reduces condensation and ice buildup on the atmosphere side of the feedthrough around the mounting flange interface, protecting the seal's integrity. This is necessary because of the extreme thermal gradients encountered with liquid nitrogen. Tubing is .25 and .375 inch OD with CF or NW flanges.
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