PP Elbow 15° SN8 Single Socket

  Datasheet (PDF)

PP elbow SN8 SDR 34 single socket is engineered for underground gravity sewer networks and external rainwater drainage systems requiring high structural stability. Designed for civil engineering contractors and utility installers, this injection-moulded fitting provides robust directional changes in pipelines subject to heavy traffic loads. Featuring an integrated EPDM elastomeric lip seal, the elbow delivers long-term leak tightness across nominal diameters from 125 mm to 800 mm.

Technical specifications

The fitting is rated for a nominal ring stiffness of SN8 (8 kN/m²), making it suitable for installations under heavy mechanical ground and traffic loading. Its smooth internal bore delivers superior hydraulic flow while the factory-fitted elastomeric sealing ring maintains leak-free operation throughout the pipeline design life.

• Material: Unplasticized polyvinyl chloride (PVC-U)
• Ring stiffness class: SN8 (8 kN/m²), SDR 34
• Connection type: Single socket with pre-installed EPDM gasket and chamfered spigot end
• Available angular deflections: 15, 30, 45, and 87 degrees
• Chemical and thermal limits: Resistant to fluid pH values between 2 and 12; working temperature up to 60 degrees C
• Internal roughness: Under 0.01 mm for reduced flow resistance and sediment elimination

Applications

This sewer elbow is designed exclusively for non-pressure buried drainage and sewerage networks installed outside the building footprint. It is widely specified in municipal infrastructure, commercial developments, and industrial effluent collection systems.

Due to its SN8 ring stiffness classification, the component is suited for installation under roadways, thoroughfares, and parking areas exposed to medium and heavy vehicle traffic. It reliably conveys domestic wastewater, chemical effluent within verified limits, and stormwater runoff. The elbow is intended for underground burial depths between 0.8 meters and 6.0 meters when laid in accordance with standardized backfilling and static calculations.

Installation and jointing

Push-fit jointing via the integrated rubber ring socket ensures fast, secure, and weather-independent assembly on site. The elastomeric gasket connection accommodates minor ground movements and structural settling without losing leak tightness.

Prior to jointing, both the spigot end and the gasket groove must be cleaned of sand and debris. Installers must apply an appropriate pipe lubricant evenly across the chamfered spigot and the elastomeric lip before inserting the spigot fully into the socket. Careful handling is required during freezing weather, particularly when the ambient temperature falls below -5 degrees C to protect against accidental impact damage.