Malleable iron equal tee

  Datasheet (PDF)

Georg Fischer malleable cast iron equal tees figure 130 (ISO/EN B1) provide a standardized, three-way 90-degree branching solution designed for distributing, combining, or diverting fluid and gas media across industrial, cooling, heating, gas, and potable water distribution networks. Engineered from high-grade decarburised annealed whiteheart malleable cast iron grade EN-GJMW-400-5 in full accordance with EN 10242 Design Symbol A, each fitting delivers exceptional mechanical toughness, high elongation, and superior pressure containment. The component features precision-machined parallel internal threads (Rp) compliant with EN 10226-1 and ISO 7-1, forming a dependable metal-to-metal pressure-tight seal along the thread flanks when mated with taper external male pipe threads (R) using suitable jointing sealant. Enhanced by a premium hot-dip galvanised protective coating applied to exceed standard mass requirements, the zinc layer bonds into an iron-zinc alloy base that resists atmospheric corrosion, prevents rust film formation, and meets stringent potable water hygiene requirements with zero polycyclic aromatic hydrocarbons. Operating reliably across an engineering temperature spectrum from -20 degrees C up to 120 degrees C at an allowable maximum working pressure of 25 bar, and rated for elevated thermal service up to 300 degrees C at 20 bar, the robust equal tee handles demanding utility duties including natural gas, compressed air lines, hydraulic oils, steam, and closed-loop hydronic circuits. Manufactured with defined z-dimension laying lengths across all connection ports from 1/8 inch to 4 inch (DN6 to DN100), the design facilitates precise isometric calculations, off-site pipeline prefabrication, and stress-free alignment without inducing torsional loading into the piping infrastructure.