Pitcher tee malleable iron

  Datasheet (PDF)

The Georg Fischer pitcher tee equal 131 is an engineered threaded fitting manufactured in accordance with ISO/EN E1 specifications for industrial and building utility piping networks that demand hydraulically optimized branch flow redirection. Produced from decarburised annealed whiteheart malleable cast iron grade EN-GJMW-400-5 conforming to EN 10242 and ISO 49 Design Symbol A, the fitting features three equal-diameter connection outlets threaded with parallel internal Rp threads according to EN 10226-1 and ISO 7-1. Departing from standard right-angled tee geometries, the pitcher design incorporates a sweeping curved profile that smoothly guides flowing media through the 90 degrees branch transition, substantially mitigating flow separation, localized fluid turbulence, mechanical friction, and dynamic head loss across the junction. Complete surface protection is achieved via an industrial hot-dip galvanisation process utilizing high-purity zinc, establishing a durable iron-zinc metallurgical bond that offers long-term resistance against corrosion in drinking water installations, closed heating loops, compressed air infrastructure, non-aggressive fuel gas distribution, and industrial process lines. The standardized Rp internal threads ensure precise thread engagement and reliable joint compression when assembled alongside external taper R pipe threads and appropriate sealing media, effectively absorbing tensile, bending, and vibrational stresses present within operating pipework. Engineered for extended service life under rigorous conditions, this robust component supports a maximum permissible working pressure of 25 bar across temperatures between -20 and 120 degrees Celsius, maintaining continuous pressure containment of up to 20 bar at operating temperatures reaching up to 300 degrees Celsius.