Product parameters:Gas flow rate: 6 L / MIN       Maximum negative pressure: -82KPa    Motor type: Brush motor              Power supply voltage: the DC 24V 12V the DC   the DC 6V           Pump head material: PTFE nylon steel            Diaphragm material: PTFE EPDM            Other seal material: EPDM PTFE FKM FFPM            Performance curve:MV-SD820 two-wire drive 5V parameter