TT Pumps Puddlepal Two in One Puddle Sucker With our conversion kits, you can convert a Puddlepal to a Liberator Submersible Water Drainage Pump, therefore providing one pump for two applications. Our Submersible Water Drainage Pump Liberator pump is designed for ground water and water containing sand and silt. Whereas, the Puddlepal is designed for removing water from flat surfaces such as floors and flat-roofs, with the ability to pump down to 1mm. The unique interchangeable design creates a 2 in 1 solution that can be done with ease, on or off site.