Into a sealed furnace, Low pressure air is introduced holding a tank of molten metal. Into the die cavity and through a riser tube, the metal feeds up slowly. Allowing any residue molten metal still in the riser to fall back into the tank for recycling, once the casting has solidified in the die, air pressure is released. The casting from zinc low pressure die casting manufacturer is removed when cooled.

The metal die is on the top of the pouring furnace and holding furnace which is air-tight and closed and to the furnace; it is connected via a riser tube.

With relatively low over pressure, by pressurizing the furnace with air or an inert gas the melt rises up in fills the mold cavity from underneath and the riser tube. Until the solidification in the gate nozzle is complete or the casting has solidified, the over pressure is maintained. On the casting and must be determined, the length of the solidification time is dependent on a case-by-case basis through suitable measurements with temperature sensors near to the location in which with a solidification simulation, the casting the solidification time can be estimated relatively precisely or finally solidifies.