jumper tube

jumper tube

[′jəmp ‚tüb]
(mechanical engineering)
A short tube used to bypass the flow of fluid in a boiler or tubular heater.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

jumper tube

A pipe or hose which is used to gbypass the usual flow of a liquid or gas.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.