Hydra-Tech Pumps’ most popular hydraulically driven submersible pump is the S3T. The S3T is a field proven pump - a reliable, portable trash pump with good flow and head capabilities.  The S3T is able to pass through a 12” opening and is relied on for general purpose dewatering from a construction site to a manhole and many other applications.  The S3T pump is available in aluminum, ductile iron and stainless steel.  As well, similar models offer additional benefits - an S3TC has a channel impeller that provides greater flow and head capability, and the S3TR has a recessed vortex impeller for more easily pass difficult trash (especially stringy solids) through the pump.