A vertical separator is a cylindrical vessel that is oriented vertically. When a gas-liquid mixture enters the separator, the heavier liquid phase settles to the bottom, while the lighter gas phase rises to the top. The liquid phase is then drawn off through a liquid outlet nozzle, while the gas phase exits through a gas outlet nozzle located at the top of the vessel.

A horizontal separator is a cylindrical vessel that is oriented horizontally. When a gas-liquid mixture enters the separator, the heavier liquid phase settles to the bottom of the vessel, while the lighter gas phase rises to the top. Horizontal separators are a common type of pressure vessel used to separate gas and liquid mixtures.

Two-Phase Spherical Separators operate on the principle of gravity separation. When a gas-liquid mixture enters the vessel, the heavier liquid phase settles to the bottom, while the lighter gas phase rises to the top. The unique spherical shape of the vessel promotes efficient separation by minimizing turbulence and maximizing the contact area between the two phases.

Depending on the specific application and the vapor-liquid mixture being separated, two-phase vessels can be oriented vertically or horizontally. In their simplest form, they are an empty tank that are used to reduce the velocity of a fluid on entry, thus allowing the liquid to fall to the bottom of the vessel and the vapor to rise to the top.