Drainage Back Inlet Bottle Gully Rectangular Grid

Drainage back inlet bottle gulley provides a trapped interface between surface water, waste appliances, and underground drainage lines. The internal bottle trap prevents foul odours from escaping while allowing continuous discharge into the main system. A back inlet allows additional waste or rainwater connections from adjacent pipe runs without excavation of the main line.

The rectangular grid offers high intake capacity and easy access for cleaning. uPVC body construction provides chemical resistance, low water absorption, and long-term stability under buried conditions. Suitable for paved areas, patios, utility connections, and external waste discharge points.

Installation Guide:

• Excavate to required depth, ensuring stable and level bedding.

• Connect the outlet spigot to the underground drainage pipe.

• Connect additional waste lines to the back inlet as needed.

• Set gulley height to finished ground level using risers if required.

• Place rectangular grid and confirm correct seating.

• Surround with concrete or granular material and compact evenly.

• Flush system to confirm unobstructed flow.