A pop-up waste is operated by a lever, when the lever is pushed down it closes the plug and when it is pulled the plug is opened allowing waste water to drain away.
The click clack or push button waste mechanism works by simply pressing the top to close and pressing it again to open allowing waste water to drain away through the waste pipe and into the outside drain. This type of waste is a very popular design due to it’s simplicity like the traditional plug and chain.
A slotted basin waste is require if your basin has an overflow, and if your basin has no overflow (usually countertop or some wall hung basins) an unslotted basin waste is required.