(under subclass 1) Processes in which the pressure of the fluent material is reduced for the purpose of facilitating handling of the material or avoiding damage to the equipment, or equalized with the pressure in another part of the system or a container to facilitate transfer of the fluent material or of control thereof, or regulated to maintain the pressure of the fluent material at a desired value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7, for processes of mixing fluids automatically controlled by pressure.
12, for processes for controlling the flow of material by sensing the pressure thereof.
