A spherical compensator junction assembly for use in a high pressure ducting system for transporting pressurized gases through a pneumatic ducting gas branch network, the spherical compensator junction assembly comprising: a substantially spherical inner race having at least three inner race apertures positioned therewithin to direct the passage of said gases from at least a first pneumatic duct section positioned upstream of said spherical compensator junction assembly to at least two pneumatic duct sections positioned downstream of said spherical compensator junction assembly; each of said at least three inner race apertures being surrounded by an outer race, in which each said respective outer race is restrainably attached to said substantially spherical inner race about said respective inner race aperture to describe a retention region substantially adjacent to said respective inner race aperture; a retainer assembly received in each of said at least three retention regions substantially adjacent to each said respective inner race aperture, each retention region being configured to receive a retainer assembly about said respective inner race aperture, for translational movement, i.e. spherically rotational movement, relative to both said substantially spherical inner race and said outer races, within said retention region, each of said at least three retainer assemblies including a retainer aperture therewithin capable of being generally aligned with a respective one of said respective inner race apertures and positioned thereover said respective inner race aperture, each said retainer assembly further including a collar element (27, 28, 29) for affixation to a respective one of said upstream and downstream pneumatic duct sections, said collar element capable of being attached to said respective pneumatic duct section, said collar element defining an upper collar aperture and a lower collar aperture, each of which upper and lower collar apertures being capable of general alignment with said respective inner race aperture, one or more bearing elements positioned within said retention region between each of said retainer assemblies and one or more of said substantially spherical inner race and said outer races, each of said retainer assemblies further capable of cooperating with said one or more bearing elements operably positioned within said retention region to facilitate the translational movement, i.e. spherically rotational movement, of said retainer assembly within said retention region relative to at least one of said substantially spherical inner race and said outer race, in response to the application of external and internal forces applied to one or more of said upstream and downstream duct sections, as well as from forces generated by said pressurized gases being directed through said spherical compensator junction assembly. a substantially spherical inner race having at least three inner race apertures positioned therewithin to direct the passage of said gases from at least a first pneumatic duct section positioned upstream of said spherical compensator junction assembly to at least two pneumatic duct sections positioned downstream of said spherical compensator junction assembly; each of said at least three inner race apertures being surrounded by an outer race, in which each said respective outer race is restrainably attached to said substantially spherical inner race about said respective inner race aperture to describe a retention region substantially adjacent to said respective inner race aperture; a retainer assembly received in each of said at least three retention regions substantially adjacent to each said respective inner race aperture, each retention region being configured to receive a retainer assembly about said respective inner race aperture, for translational movement, i.e. spherically rotational movement, relative to both said substantially spherical inner race and said outer races, within said retention region, each of said at least three retainer assemblies including a retainer aperture therewithin capable of being generally aligned with a respective one of said respective inner race apertures and positioned thereover said respective inner race aperture, each said retainer assembly further including a collar element (27, 28, 29) for affixation to a respective one of said upstream and downstream pneumatic duct sections, said collar element capable of being attached to said respective pneumatic duct section, said collar element defining an upper collar aperture and a lower collar aperture, each of which upper and lower collar apertures being capable of general alignment with said respective inner race aperture, one or more bearing elements positioned within said retention region between each of said retainer assemblies and one or more of said substantially spherical inner race and said outer races, each of said retainer assemblies further capable of cooperating with said one or more bearing elements operably positioned within said retention region to facilitate the translational movement, i.e. spherically rotational movement, of said retainer assembly within said retention region relative to at least one of said substantially spherical inner race and said outer race, in response to the application of external and internal forces applied to one or more of said upstream and downstream duct sections, as well as from forces generated by said pressurized gases being directed through said spherical compensator junction assembly.