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Available for OEM customers and high-quantity orders. Please contact an Atlas salesperson for pricing and availability.

Atlas aluminum elbows, tees, and crosses are precision-machined for HV and UHV-compatible tube fittings. These compact, weldable fittings are designed and machined with smooth internal surfaces and radiused corners to maximize conductance and flow. Atlas aluminum elbows, tees, and crosses are rigorously tested to UHV standards and are compatible with Atlas ISO, CF, and ATCR face-seal flanges and fittings.

They are ideally suited for both HV and UHV environments in the semiconductor, magnetic, nuclear, and medical fields, and are suitable in chemically corrosive environments.


Atlas aluminum fittings are available in standard tube sizes including 1/4, 3/8, 1/2, 3/4, 1, 1-1/2, and 2 inch diameters.

Our aluminum elbows, aluminum tees, and aluminum crosses are compatible with standard US tube sizes.  Custom metric sizes are available upon request.

Aluminum’s superior thermal conductivity properties keep semiconductor process gasses in suspension — one more reason for using aluminum vacuum components.

Specifications

  • Atlas aluminum elbow, tee, and cross weld fittings are fully compatible with the Atlas ATCR face-seal fittings.

Material

  • Body/Weld Interface is made of 6061-T6 Aluminum alloy

Environmental

  • Vacuum Rated to 1×10-11 Torr
  • Peak Temperature: 300°C
  • Operational Temperature from -200°C to 250°C

Size Diagram A Diagram B Diagram C Diagram D Diagram E Diagram F Diagram G Diagram H Diagram I Part Number Files Actions
3/8" 0.315 0.938 0.596 1.25 1.875 0.625 0.625 CRBW-0038
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1/4" 0.18 0.683 0.35 0.865 1.365 0.5 0.365 CRBW-0025
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1/2" 0.4 0.938 0.596 1.25 1.875 0.625 0.625 CRBW-0050
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3/4" 0.62 1.44 0.875 1.915 2.88 0.965 0.95 CRBW-0075
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1" 0.875 1.563 1.125 2.163 3.125 0.963 1.2 CRBW-0100
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1 1/2" 1.25 1.875 1.625 2.725 3.75 1.025 1.7 CRBW-0150
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2" 1.75 2.125 2.125 3.225 4.25 1.025 2.2 CRBW-0200
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2.12" 2.25 2.875 2.625 4.225 5.75 1.525 2.7 CRBW-0250
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3" 2.75 3.125 3.125 4.725 6.25 1.525 3.2 CRBW-0300
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Size Diagram A Diagram B Diagram C Diagram D Diagram E Diagram F Diagram G Diagram H Diagram I Part Number Files Actions
1/4" 0.255 0.18 0.281 0.683 0.35 0.865 1.365 0.5 0.365 CRSW-0025
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3/8" 0.38 0.315 0.313 0.938 0.596 1.25 1.875 0.625 0.625 CRSW-0038
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1/2" 0.505 0.4 0.313 0.938 0.596 1.25 1.875 0.625 0.625 CRSW-0050
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3/4" 0.755 0.62 0.3 1.44 0.875 1.915 2.88 0.965 0.95 CRSW-0075
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1" 1.005 0.875 0.4 1.563 1.125 2.163 3.125 0.963 1.2 CRSW-0100
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1 1/2" 1.505 1.25 0.4 1.875 1.625 2.725 3.75 1.025 1.7 CRSW-0150
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2" 2.005 1.75 0.4 2.125 2.125 3.225 4.25 1.025 2.2 CRSW-0200
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2.5" 2.505 2.25 0.4 2.875 2.625 4.225 5.75 1.525 2.7 CRSW-0250
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3" 3.005 2.75 0.4 3.125 3.125 4.725 6.25 1.525 3.2 CRSW-0300
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