The S310SS 3-inch hydraulic submersible slim-line pump from Hydra-Tech Pump is designed for jobs such as blast hole dewatering, groundwater evacuation and sampling, utility manholes and construction job sites. It is used where space is limited, such as 4-inch well casings, transformer vaults and bilges. Combined with HT6 to HT13 power units, the stainless steel pump is capable of flow up to 60 gpm. The safe and variable-speed hydraulic drive can be used where electric power is hazardous or impractical. 570/645-3779; www.hydra-tech.com.