Spin Drifter Bottom Drains The 4" Spindrifter aerated bottom drain is known worldwide for its quality and design. The most noticeable feature of the Spindrifter bottom drain is the extra 1 inch DIA Pressure pipe connection in the sump of the drain. This allows the air supply hose to enter the sump independent of the water outlet pipe, thus eliminating the possibility of restriction to the water flow and somewhere else for blanket weed to attach. The membrane and backing plate on the Spindrifter bottom drain fits into a recess in the specially manufactured dome (provided). The recess in the Spindrifter bottom drain prevents the membrane from becoming detached. The complete assembly is secured to the Spindrifter bottom drain by means of a stem, which also provides the air inlet. Most water pipe sizes can be accommodated, the customer to specify. The air inlet is via a nickel plated connector. Please Note: The Air Kit and Liner Kit are sold separately and do not come with the bottom drain unit.
