Self-priming automatic electric pump, 12/24V, with constant pressure electronic control for the transfer of diesel and oil. Bronze gears, NBR check valve, body and connections in nickeled brass, stainless steel shaft. FKM seals and NBR O-rings. Helical bronze gears guarantee constant pressure, heavy duty cycles, less noise and can operate in the absence of liquid. The pumps are supplied with a “High-Speed” setting for Diesel transfer. The integrated SCS control panel allows the switch to the “Low-Speed” mode for the transfer of oil and viscous liquids.