Long sweep bend 90° malleable iron Rp - R

  Datasheet (PDF)

The Georg Fischer long sweep bend 90 degrees ISO/EN G4 in hot-dip galvanised malleable cast iron is an engineered piping fitting designed for directional changes with maximum flow efficiency in pressurised utility and industrial piping systems. Engineered with an extended sweep radius, the component ensures a gradual and uniform fluid deflection that significantly reduces internal turbulence, localized cavitation, and friction head losses compared to standard short-radius elbows, thereby protecting overall pumping efficiency and maintaining volumetric throughput. Featuring a versatile male-to-female jointing configuration, the fitting is manufactured with a taper external thread R on one end and a parallel internal thread Rp on the opposite socket in strict accordance with EN 10226-1 and ISO 7-1, delivering dependable metallic compression sealing along the interlocking thread flanks when engaged with an approved sealant. The body is cast from decarburised annealed whiteheart malleable iron conforming to Design Symbol A and EN 10242 / ISO 49 standards, conferring outstanding structural rigidity, impact toughness, and fatigue resistance against continuous pipeline vibrations, pressure surges, and mechanical bending stresses. Comprehensive surface protection is achieved through hot-dip galvanising using high-purity zinc, creating an impermeable iron-zinc alloy diffusion layer shielded by pure zinc that ensures long-term passivation against atmospheric oxidation, water contact corrosion, and aggressive media. Operating reliably at working pressures up to 25 bar across fluid temperatures from -20 degrees Celsius to 120 degrees Celsius, and up to 20 bar at 300 degrees Celsius, this bend integrates into fire sprinkler, cooling, heating, gas, and potable water distribution networks while enabling accurate prefabrication layout via standardized z-dimension planning.