VIEGA Rotguss Elbow 90°, 1/2″ Female x Female Thread, Gunmetal (Brass Alloy), Art. 269272

This elbow is female at both ends, meaning the thread is cut inside the opening. A pipe or nipple with a 1/2" male thread screws in from either side. If one end has to go straight into a valve or another fitting, choose an elbow with a male end instead.

Both ends are Rp to DIN EN 10226-1, a parallel female thread that forms a tight joint with a tapered R male thread. Viega permits hemp with paste, PTFE thread tape or thread-sealing cord; the hemp should sit in the thread roots and not on the crests.

Yes. In Viega's instructions, these threaded connectors are fit for building drinking-water installations to DIN 1988-200 and EN 806-2, as long as the choice of material follows DIN EN 12502-1 and the UBA assessment basis for metals in contact with drinking water. Viega also says the parts must be shielded from high chloride concentrations.