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Adapter KF-16 to Welch Vacuum Pump (Old Style), Model 1405, Thread Size 3/4-20

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Adapter KF-16 to Welch Vacuum Pump, Model 1405 (Old Style), Thread Size 3/4-20, Stainless Steel

These adapters are KF-16 to Welch vacuum pumps, model 1405, Old Style Pumps. The flange size ISO-KF NW-16 to Welch pump thread size 3/4-20. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.

Adapter KF-16 to Welch vacuum pumps (Old Style) model 1405
ISO-KF Flange Size: NW-16
Thread Size: 3/4-20 NPSM
Common Dimensions: A = 2.56 in., B = 0.56 in.
FOR OLD STYLE WELCH VACUUM PUMPS, ie. An Old Style Pump has an oil sight glass
held in place with a bolt ring, click on far right picture for example of an old style pump.
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