There are two types of plumbing stacks: A stack vent and a soil or waste stack.

A vent pipe which is the continuation of a SOIL STACK which means a toilet is drained into it versus a waste stack that is continuation of a grey water drain.

Yes, as long as it isn't a dry VENT stack

You may need a soil stack to release the airlock!

This is the traditional system of drainage within buildings. The foul or soil matter

is conveyed in a separate drain and stack from the waste matter. The size of the

soil stack should not be less than the size of any soil fitting discharging into it,

and in Nigeria, is generally not less than 100mm. The waste stack is similarly

sized and is generally not less than 50mm.