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Atlas Quick-Disconnect Bimetal Fittings enable easy tube joint connections to be made on aluminum vacuum systems. They seal against tube ODs of standard tubes. They are made of 6061-T6 aluminum and are available for seventeen US standard tube sizes from 1/16 up to 2 inch diameters. Fittings are comprised of four basic parts… a body, gasket, retainer and nut. The retainer and nut are stainless. There is an Atlas bimetallic transition that joins the stainless sealing body to the aluminum body for weld-up to an aluminum vacuum vessel. Standard gasket material is a Viton® elastomer, which is capable of sustained operation at temperatures to 150°C. Quick-Disconnect fittings are a quick and easy way of connecting tubular vacuum components such as feedthroughs, gauges, and glass tubing to aluminum vacuum systems.


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Size Thread A B C D Part # Files Actions
1/4" .500-20 0.375 0.26 0.64 1.33 QDBI-0250
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1/8" .375-20 0.375 0.13 0.5 1.38 QDBI-0125
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3/8" .688-20 0.5 0.38 0.88 1.33 QDBI-0375
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1/2" .750-20 0.625 0.51 0.88 1.38 QDBI-0500
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5/8" 1-20 0.75 0.63 1.1 1.55 QDBI-0625
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3/4" 1.188-20 1 0.76 1.38 1.59 QDBI-0750
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7/8" 1.25-20 1.18 0.89 1.38 1.59 QDBI-0875
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1" 1.375-20 1.02 1.3 1.62 1.85 QDBI-1000
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1-1/8" 1.625-20 1.54 1.14 1.88 1.87 QDBI-1125
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1-1/4" 1.688-20 1.62 1.27 1.88 1.97 QDBI-1250
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1-3/8" 1.812-20 1.67 1.37 2 2.15 QDBI-1375
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1 1/2" 2-20 1.92 1.52 2.26 2.15 QDBI-1500
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1-5/8" 2.125-20 2.1 1.64 2.38 2.15 QDBI-1625
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2" 2.5-20 2.25 2.01 2.76 2.35 QDBI-2000
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