This is often useful for washing hair without needing a full shower. Bath pillar taps are seperate taps for hot and cold h2o. All kinds can also be mounted directly to the bathtub, over the wall or as freestanding taps on standpipes. The freestanding taps are common with freestanding baths. https://bathroomtapsblack83615.fireblogz.com/64350973/the-basic-principles-of-cheap-black-bathroom-taps