Compact McMulti-133 Inline Multi-Port Adapter – Breakthrough Small-Flange Feedthrough Solution

This ultra-compact multi-port adapter mounts inline on a standard 1.33" (DN16 / CF133) ConFlat flange, delivering 1–6 Swagelok-style compression fittings sized for 1/8" stainless steel tubing (or equivalent). Its low-profile design (significantly smaller than our popular McMulti2-4-90) provides maximum flexibility for dense porting on miniature or space-constrained UHV chambers.

Key Features:

• Flange: 1.33" CF (non-rotatable)
• Ports: 1 to 6 Swagelok fittings (typically 1/8" tube size; custom sizes/configurations available)
• Material: 304 stainless steel (316/L and other materials available on request)
• UHV Compatible: Bakeable to 450°C, low-outgassing design, 100% leak-checked
• Inline Design: Less than 1" long for direct integration without bulky extensions
• Versatile Breakouts: Ideal for 1/8" SS tubing, but engineered for expanded use cases

Novel Capabilities: Electrical Power & Optical Passthrough

This compact adapter opens powerful new applications beyond basic gas or fluid lines:

High-Current Electrical Power via Kapton® Insulated Wire Kapton-insulated wires are a proven choice for UHV environments due to their excellent thermal stability (up to 450°C+), low outgassing, high dielectric strength, and mechanical robustness.

• Pass single or multiple Kapton wires through individual Swagelok ports.
• Suitable for moderate-to-high current applications (current capacity depends on wire gauge, length, and bundling—e.g., conductors rated for several amps continuous in vacuum, with derating for thermal management). No contact losses means more power headroom.
• Sealing achieved via compression fittings with appropriate ferrules or epoxy/potting for semi-permanent vacuum integrity.

Zero-Junction Optical Fiber Passthrough Optical fibers can be fed directly through the Swagelok ports for seamless, low-loss light transmission into the vacuum chamber.

• Supports single-mode, multi-mode, or fiber bundles (typically up to ~400–1000 µm diameter depending on fitting clearance).
• Seamless fiber passthrough with zero junctions reduce insertion loss, reflection, and alignment issues—ideal for laser delivery, spectroscopy, sensing, or imaging applications.
• Use Swagelok Ultra-Torr vacuum-rated fittings or custom ferrules for reliable sealing. Multiple ports allow independent fiber routing.

Ideal Applications

• Dense UHV chamber instrumentation (power, signals, cooling lines, sensors)
• Custom evaporators, manipulators, or probe stations
• Laser/optical diagnostics
• High-power in-vacuum heating or actuation
• Space-constrained systems requiring maximum port density on small flanges

Like our larger McMulti series, this compact version is fully customizable—different port counts, fitting sizes, thread options, outboard supports, or hybrid configurations (e.g., mixed electrical/optical/tubing). Contact us for drawings, quotes, or engineering support tailored to your exact requirements.

McAllister Technical Services – Precision UHV Solutions from North Idaho. Built for reliability in demanding vacuum environments. Let us know what you need!

Options

CONTACT FACTORY FOR CUSTOMIZATIONS AND ADDITIONAL OPTIONS