Shallow well jet pump with built-in pressure switch. Superior performance at depths to water of 25 ft or less. 1/2 HP pumps up to 8 GPM. 3/4 HP pumps up to 12 GPM. 1 HP pumps up to 18 GPM. Fiberglass-reinforced thermoplastic pump housing for the highest corrosion-resistance. Heavy-duty dual-voltage motor - 1/2 HP preset at 115V; 3/4 HP and 1 HP preset at 230V. Self-priming after pump housing is initially filled. CSA certified.