The AAP Union Socket Weld is a professional-grade product from AAP — Australia's specialist in industrial valves, pipe fittings, and flow control solutions. It is suited to removable pipe connections where equipment isolation and replacement is required and related applications across process engineering, maintenance, and industrial plant. Where this product is used Union fittings allow a pipe connection to be broken and remade without cutting, used wherever equipment must be disconnected for maintenance. AAP unions are used in threaded and socket piping systems throughout industry and building services. Removable pipe connections where equipment isolation and replacement is required Joints in threaded and socket piping systems requiring periodic disconnection Connecting instrumentation, valves, and equipment in process and utility pipelines Key specifications Connection Socket Weld Selecting the right option Select union fittings by nominal pipe size and thread type (BSP, BSPT, or NPT). Material — stainless 316, brass, or galvanised — is noted in the product title. Unions are not a pressure-rated fitting — check maximum pressure rating for the service.