Ground pipe fittings PP

Buying guide for ground pipe fittings in PP

Correctly dimensioned and installed ground pipe fittings are crucial to avoiding leakage, subsidence and future ground damage. Polypropylene (PP) is developed to withstand tough ground conditions and provides a flexible but stable pipe layout.

Advantages of polypropylene pipe fittings

PP material combines low weight with high mechanical strength:

• High impact strength: Withstands mechanical stress and handling on the construction site, even at lower temperatures.
• Tight and reliable joints: The factory-installed rubber ring seals ensure a tight joint that resists roots and ground moisture.
• Good chemical resistance: Withstands household wastewater, soil chemicals and aggressive liquids without weakening.
• Temperature resistance: Handles both hot wastewater and cold ground environments without deforming.

Common components and applications

A functioning piping system requires the right combination of parts to ensure optimal flow and easy future inspection:

• Ground bends: Available in angles from 15° up to 88.5° to adjust the direction of the pipe. Long radius bends reduce the risk of blockages in tight curves.
• Manifolds: Enables the connection of side branches and multiple pipes to the trunk, usually at 45° for smooth transitions.
• Push-in and double-jointed: Perfect for repairs, splicing pipes without a joint or when fitting between fixed points.
• Clean-out pipes: Provides direct access for flushing and camera inspection of the piping system when needed.
• Sanded sleeves: Provides good adhesion when casting through concrete walls or manholes where a tight penetration is required.

Important things to consider when installing

Check the outer diameter of the pipes before ordering so that bends, sleeves and branch pipes close tightly around the pipes. Always clean the tip end and sleeve from gravel and mud before installation, and always use an approved lubricant for ground drainage to avoid damaging the rubber gasket when compressed. The pipes should be laid on a stable, well-balanced surface with the correct slope for a gravity system so that sludge and particles do not stick to the bottom of the pipes.