The thing that makes a turtledrain unique is its undernearth, clog-resistant ribbing. As we're sure you are aware, most drains are called drains because they separate larger debris from water, allowing the water to pass through without damaging plumbing. These drains, which are installed in low-elevated areas, rely on gravity to attract and collect water- think of your bathtub! Ultimately though, these drains clog when external debris like leaves, rock, silt, garbage, etc. begins to collect around the drain.
But with a turtledrain... The debris filtering process begins at the start of the drain and not the source of the drain. A turtledrain is designed so that first, any debris has to pass through 1" by 1/8" inlets. If the debris partical can get through there, it is sent through another filtering system as these inlets grow smaller as they approach the drain. Finally, any debris that can make it through these inlets will be small enough to pass through a turtledrain without problem.
Because of a turtledrain's flow-controlling, clog-resistant and patented design, they can be used as a roof drain, a pick-up head, or as a stand-alone system which, because of its clog-resistant design, can operate solely on siphonic principles (the power of gravity)! See below to understand how these two molds created a system of several unique, clog-resistant, dewatering and drainage products.