This is minecraft forge modification adding fans.

Currently there are iron, gold, diamond and emerald fans (each faster than its predecessor). Iron fan is weaker than gravity. If entity stands on two fans at once, then their force adds up.

Redstone fan has range depending on redstone signal strength.

Range of this fan can be configured by right clicking on it (0 blocks - 15 blocks).

Doesn't push entities while they are touching it.

Fans don't push you while you are standing on ground.

Item used to push entities.