breather pipe

breather pipe

[′brē·thər ‚pīp]
(mechanical engineering)
A pipe that opens into a container for ventilation, as in a crankcase or oil tank. Also known as crankcase breather.
References in periodicals archive ?
As to be expected an internal breather pipe and user replaceable gasket are standard.
A removable adsorbent container allows the unit's desiccant material to be changed without breaking the breather pipe connection.
Sian has also encountered problems with the sink unit as the boiler's breather pipe has no exit and vapour enters the kitchen.