5000ml Double-head Liquid Filler:Each Head matchs own Valves, it can work Separately, makes the filling capacity very precise. Double Heads & Double Valves ... technology. It has Two Heads and Two Valves, Each Head matchs own Valves, it can work Separately, makes the ... Filling head adopts anti-leakage, anti-pull and with diving filling device.Vertical type 5000ml liquid filler: Double-head Piston Liquid ...