High-density polyethylene inspection fitting, used in: – Domestic wastewater drainage systems (intermittent +95°C, continuous +80°C) and gravity stormwater drainage inside high-rise buildings, public buildings, industrial halls. – Vent stacks for drainage systems. – Domestic wastewater drainage systems (intermittent +95°C, continuous +80°C) and gravity stormwater drainage installed buried in the ground – range of PE100 pipes and fittings – SDR26 (S12.5). – Vacuum stormwater drainage, made of (electro)welded PE100 pipes and fittings. Features – Diameter range: (Ø)32, (Ø)40, (Ø)50, (Ø)56, (Ø)63, (Ø)75, (Ø)90, (Ø)110, (Ø)125, (Ø)160, (Ø)200, (Ø)250. (Ø)315. – Compliance: EN 1519. – Series: S12.5 for SDR26 and S16 for SDR33. – Application classes: – B – for use inside and outside buildings, wall-anchored. – BD – for use inside buildings or buried in the ground within the building perimeter (at a maximum distance of 1 m from it and connected to the building’s drainage system). For this use, only pipes with diameters of 75 mm or larger belonging to the S12.5 series are permitted. – Material: high-density polyethylene. – Type: single-layer. – Maximum operating temperature: +95°C, intermittent. – Color: black. – Joining methods: – Butt fusion and electrofusion coupling: PE100 SDR26 at 5 bar/−800 mbar and PE100 SDR33 at 4 bar/−450 mbar, with fluid at +20°C and safety factor 1.25. – Socket and gasket joint, expansion sleeve – max. 0.5 bar. – Mechanical flanged joint. – Mechanical joint with threaded fittings.