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. When combined with HT11 to HT15 power units, it is capable of flows up to 380 gpm. The variable-speed hydraulic drive is a safe alternative to be used where electric power is hazardous or impractical. A small-hole water strainer is available for jobs with limited solids. 570/645-3779; www.hydra-tech.com.