Marco® UP3/E electronic water pressure system self-priming automatic electric pump with helical PEEK gears, integrated check valve and electronic control. Pump has a nickel-plated brass body and stainless steel shaft. Self-priming electric pumps with helical polymer gears, universal voltage 12/24V, check valve and electronic pressure sensor. The polymer gears guarantee constant pressure, heavy-duty cycles, lower noise levels and excellent resistance to chemicals.