What is the purpose of a bottle gully like the FloPlast UGG4?

The FloPlast UGG4 acts as a trap and access point in underground drainage systems — it prevents foul odours escaping whilst allowing inspection and maintenance via its rectangular top.

Is the rectangular top bottle gully compatible with 110 mm systems?

Yes. The UGG4 connects via a 110 mm spigot and complies with BS EN 1401-1, making it compatible with most UK 110 mm drainage systems including FloPlast, Marley, Brett Martin, and others.

Where is the UGG4 installed?

The UGG4 is typically used at points where waste or rainwater outlets join underground drainage, especially where maintenance access is required and space is constrained.

What's the minimum water seal depth on the UGG4 bottle trap?

The bottle trap maintains a minimum 50mm water seal depth to prevent foul odours from backing up through the system.

Can I connect washing machine waste directly to this gully?

Yes, the UGG4 is specifically designed for kitchen and utility connections including washing machines and dishwashers. The bottle trap design handles the varying flow rates from appliances effectively.

What size rectangular opening does the UGG4 have for maintenance access?

The rectangular top opening measures 150mm x 100mm, providing adequate access for cleaning and inspection whilst maintaining structural strength.

Does the UGG4 come with a grid or cover for the rectangular top?

No, the UGG4 is supplied without a cover or grid. You'll need to order a compatible rectangular gully grid separately if surface protection is required.

What's the invert depth on this gully from ground level?

The UGG4 has a standard invert depth of 150mm from the top of the rectangular opening to the 110mm outlet connection point.

Can I use the UGG4 for rainwater downpipe connections?

Yes, it's suitable for rainwater applications as well as foul waste connections. The bottle trap design helps prevent debris from entering the underground drainage system.

What's the maximum temperature rating for waste water through the UGG4?

Being manufactured from PVC-U to BS EN 1401-1, it can handle continuous temperatures up to 60°C, suitable for normal domestic hot waste water discharge.

Does the bottle trap section unscrew for cleaning access?

Yes, the bottle trap chamber can be unscrewed from the main body for thorough cleaning and debris removal during maintenance.

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The FloPlast 110mm Rectangular Top Bottle Gully (UGG4) is a robust underground fitting designed to prevent foul odours from escaping and block debris from entering the system.

Manufactured from durable PVC-U and certified to BS EN 1401-1, it’s ideal for connecting kitchen, utility, or rainwater outlets into a 110mm underground drainage run.
The rectangular top allows for straightforward maintenance and inspection, while the bottle trap ensures a consistent water seal.