How Does the Water Claw Flood Tool Work?
The purpose for standing on the Water Claw is not to "squash" the carpet and pad to release water, but simply to facilitate a tight seal between the tool and the face fibers.
The water seal against the bottom plate causes a restriction in airflow, which maximizes existing suction capabilities inside the Water Claw suction manifold. This increased suction not only wants to replace its negative atmosphere by drawing water into the vacum chamber, but because of the several holes placed against the saturated surface, your vacuum's "sub-surface" flood lifting power is supercharged in the same way lifting force is multiplied with a pulley system.
Because the Water Claw is not limited to sucking water off the top side of carpet only, there is no need to use heavy weights concentrated onto a small area for extraction results. The Water Claw operator can be assured that there is no threat of damaging backing in its vulnerable wet state or forcing water through wood sub-flooring.