Malleable iron socket Rp - R

  Datasheet (PDF)

The Georg Fischer 529a galvanized malleable cast iron socket provides a robust, inline threaded connection combining an internal parallel thread and an external taper thread conforming to ISO/EN M4 geometry. Engineered for industrial process piping, cooling circuits, compressed air lines, hydronic heating networks, and mechanical utility systems, the fitting delivers secure jointing between female-threaded fittings and male-threaded pipe runs of the same nominal diameter. The component operates on a precision metal-to-metal wedge jointing principle where taper external threads engage parallel internal threads according to EN 10226-1 and ISO 7-1 standards. As the threads are tightened, metallic compression between the mating thread flanks produces a dependable pressure-tight seal when supplemented with appropriate thread jointing sealants or PTFE tape. Manufactured from high-grade decarburised whiteheart malleable cast iron grade EN-GJMW-400-5 under Design Symbol A specifications, the socket offers exceptional dimensional stability, high impact resistance, and reliable performance against mechanical vibrations and piping stresses. For the smaller 1/4-inch and 3/8-inch dimensions, precision-machined steel bodies with electroplated zinc coatings ensure accurate engagement and mechanical rigidity, while sizes from 1/2-inch to 2-inch feature beaded malleable iron bodies protected by a uniform hot-dip galvanized layer. This durable zinc surface provides lasting cathodic protection against external corrosion, atmospheric weathering, and condensation. Rated for continuous service at maximum permissible operating pressures up to 25 bar across fluid temperatures from -20 degrees Celsius to 120 degrees Celsius, and up to 20 bar at temperatures reaching 300 degrees Celsius, this ISO/EN M4 socket maintains rigid structural integrity under demanding industrial operating parameters.