Blackhawk Technology’s non-polluting Apollo models pump virtually anything that flows, regardless of viscosity or chemical composition. Developed for landfill gas and remediation/recovery sites, Apollos also pump condensate sumps in renewable-energy farm operations. The Scotch-yoke, above-grade driver has few moving parts and requires less maintenance than other pump technologies. In-sump piston mechanics resist biofouling and encrustation. Flows range to 3,800 gallons per day for solar models, 4,300 gpd for AC-electric.