PVC-KG Tapping Saddle 87° SN4

  Datasheet (PDF)

PVC-KG tapping saddle 87 degrees SN4 provides an efficient, highly reliable solution for creating secondary lateral branch connections onto buried gravity sewer and drainage networks without requiring pipeline section cuts. Engineered from robust orange RAL 8023 unplasticized polyvinyl chloride, the component features a profiled base matched to the exterior curvature of the main collector pipe, securing a rigid, permanent chemical joint through solvent welding. The branch outlet is oriented at a nominal 87-degree angle to optimize gravitational inflow dynamics, integrating an engineered socket fitted with an EPDM elastomeric lip seal that ensures immediate, leak-tight push-fit engagement with incoming drainage pipes while accommodating soil settlement and slight angular movement. Designed with a ring stiffness rating of SN4 (4 kN/m²), this tapping saddle is engineered for seamless compatibility with both SN4 and SN2 underground non-pressure collectors outside the building footprint (application area code U). The inert PVC-KG material delivers complete resistance to electrochemical corrosion, caustic substances, acidic compounds, and mineral salts found in typical domestic and industrial wastewater across a pH spectrum of 2 to 12, as well as prolonged durability against aggressive soil environments. Hydraulically optimized surfaces maintain minimal internal roughness to prevent sediment accumulation, incrustation, and bio-growth, ensuring sustained high flow efficiency over an anticipated operational lifespan exceeding 50 years. Operating smoothly with continuous effluent temperatures up to 60 degrees Celsius for nominal lateral sizes and 40 degrees Celsius for large-diameter lines—with short-term spikes admitted up to 60 degrees Celsius—the fitting ensures maximum integrity throughout gravity drainage networks.