This statement was developed by the Public Health Nursing Definition Document Task Force. under the direction of the leadership of the Public Health Nursing Section of the American. Public Health Association. The statement was adopted by the Public Health Nursing Section.
A Universal Expansion joint is an assembly containing two bellows connected by a centre pipe and equipped with tie rods. Universal Expansion joints are mainly used to absorb any combination of the three basic movements in the piping system. (Axial, Lateral, Angular).
The expansion devices used in refrigeration systems can be divided into. fixed opening type or variable opening type. As the name implies, in fixed. opening type the flow area remains fixed, while in variable opening type the flow. area changes with changing mass flow rates.