The Yamitsu Sump Bottom Drain is ideal for Koi keepers who like to have a silt free pond with a minimum of pipework showing. Use with a Gravity Fed Pump system for best results. It can handle larger particles of waste and debris for the cleanest pond possible.
It is intended to be used with 110mm piping (not ideal to use with pressure pipe). Use a good quality sealant to create a smooth seal and secure finish.