Garlock 4NBGZ 4" NBG Zinc Set 150 PSI

The Garlock 4NBGZ NBG is a gasket and bolting assembly designed for sealed pipe flange connections in mechanical piping designs within HVAC systems. It is commonly used in chilled water, hot water, and low-pressure fluid transfer applications where controlled sealing between connected flanges is required. The set includes components intended for 4" flange assemblies rated for 150 PSI service conditions. Within HVAC systems, it works as part of the piping network to assist stable flow and reduce leakage at connection points. Its zinc-coated hardware also supports cleaner installation in commercial and residential equipment areas and utility systems.