Waterfall Basin Tap Wall Mounted Black Matte Finish Single Metal Lever Tap. This tap has been designed with all types of plumbing systems in mind so you never have to worry about compatibility issues. Black Taps For Bathroom is a great way of adding luxury to the bathroom. This designer contemporary-style; waterfall basin tap has an open spout, creating a beautiful waterfall effect, complemented by a single lever handle that gives fingertip control of the temperature and flow of water. Working Pressures: Min 1.0bar, Max 5.0bar.