If you suck water or veggie oil out of a tank, the cleanest liquid is near the surface, because dirt particles sink to the bottom. Therefore the floating extraction near the surface is the best way.
The floating extraction makes sure that a quiet suction near the surface takes place. Due to this, nearly no dirt is sucked in and the sediment is not disturbed. The floating extraction is a must for any rainwater tank and vegetable oil tank.
At last we have found a manufacturer who supplies baskets with welded-on ear and fastening clamp. At the clamp a floating ball can be hooked.
When used as a foot valve for a suction hose, the return valve and the pump should be protected by a perforated basket to avoid any damage by coarsed particles.