bag plug

bag plug

[′bag ‚pləg]
(engineering)
An inflatable drain stopper, located at the lowest point of a piping system, that acts to seal a pipe when inflated.

bag plug

An inflatable drain stopper; when inflated, it acts to seal a pipe; usually located at the lowest point of the piping system
References in periodicals archive ?
The bag plugs into a car's 12 volt system via the cigarette socket.
The bag plugs into a vehicle power source and maintains food temperatures of 140 degrees Fahrenheit or above for the duration of the trip.