The S3T 3-inch hydraulic-drive submersible trash pump from Hydra-Tech Pumps fits into 12-inch openings and is used where lightweight, high-volume trash pumps are needed. A small-hole water strainer is available for jobs with limited solids. Combined with HT11 to HT15 power units, the pump is capable of flows up to 380 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.