Compression fittings (WaterKit) are designed for pressurized potable water transport. Components (A) – Fitting body, made of polypropylene PP-B with excellent mechanical properties even at high temperatures, black. (D) – Locking bush, polypropylene material, black. (B) – Clamping nut, made of polypropylene PP-B with added dye for high UV radiation stability and heat resistance (grade 8, according to DIN 54004), RAL5005 blue. (C) – Compression ring, made of acetal resin POM with high hardness and mechanical resistance, white. (E) – O-ring seal, made of NBR acrylonitrile elastomeric rubber, specially for food use, black. Reference Standards Dimensions: UNI 9561 Working Pressures: UNI 9562, DIN 8076-3, ISO 14236, BRL-K03 polyethylene pipes: EN 12201, DIN 8074, UNI 7990 Threads: UNI ISO 7/1, EN 10226-1, ANSI ASME B1-20.1 Flanges: DIN 2501-1, EN 1452-3, ISO 7005-2 Usage PN represents the maximum operating pressure (~PFA in EN 805 standard) and has a value of 16 bar for diameters 16-63 mm and 10 bar for diameters 75-110 mm, at an operating temperature of 20°C.