Natural gas processing is a complex industrial process designed to reduce impurities from raw natural gas by separation process to produce gas which is known as pipeline quality dry natural gas. In Titas Gas Field (Location #A), natural gas process plant is mainly designed to separate the water from the raw gas and make the gas transmittable to the consumer. Natural gas dehydration for Titas Gas Field mainly includes the separation of water from gas by Glycol Dehydration Process. Besides, a little amount of condensate is also separated during the dehydration process. Condensate of Titas Gas Field mainly contents hydrocarbon of C3-C4. As the absorbent, TEG (Tri-Ethylene Glycol) is the most preferable to use. In this paper, we represent the design of the equipment using in the glycol dehydration plant of Titas Gas Field, Location #A. Equipment sizing means calculating optimum height, diameter, number of tray, capacity, circulation rate etc. of each equipment. Calculation of height, diameter, number of tray capacity, circulating rate etc. of the equipment by using various tables, figures, charts, methods. In this paper we designed Inlet 3-phase separator, Glycol contactor tower, Lean-Rich glycol heat exchanger, Glycol circulation pump, Glycol flash separator (3-phase), Glycol regenerator (Re-boiler), Stripping still. It has to be mentioned that this is a theoretical design of the equipment for a glycol dehydration plant based on the operating condition of Titas Gas Field, Location #A which can be more efficient than the operating equipment.