Mag Drive Gear Pumps AxFlow UK offers three ranges of magnetically driven gear pumps. Series 3 Pulsafeeder Eclipse Gear Pump Mag drive external metal and plastic gear pumps for flows up to 5 m3/hr and pressures of 10 bar. Pulsafeeder Isochem Pumps Mag drive external metal and plastic gear pumps for flows to 12.5 m3/hr and pressures of 14 bar Envirogear Magnetically driven internal gear pumps for flows up to 35 m3/hr and pressures of up to 14 bar