Dry prime pump features an Enviroprime system that prevents sewage, debris, and chemicals from discharging onto the ground. Even when simply rerouting stormwater, spillage is assured not to happen. The Enviroprime uses an air compressor to separate air from water moving through the pump, preventing the pump’s venturi from clogging and causing a shutdown.• Unit Model: 18JSCK • Size (In.): 18 • Maximum* Capacity (GPM): 11,000 • Maximum* Head (Ft.): 160 • Maximum* PSI: 69 • Maximum* Solids (In.): 4.00