OsmaDrain Access Gully - 110mm - 4D850

Name: OsmaDrain Access Gully - 110mm - 4D850
Brand: Osma
SKU: ewbv2auruf
Price: 63.08 GBP
Availability: InStock

The OsmaDrain access gully is a high-quality component for foul and surface water gravity drainage...

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OsmaDrain Plain Ended Access Gully 110mm 4D850

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Product Information

Full details

The OsmaDrain Access Gully (4D850) is designed for professional drainage installers and contractors working on foul and surface water gravity drainage systems. It provides a highly reliable, roddable, and trapped solution for effective water management, featuring a convenient rotating top for easier installation alignment. While it excels in versatility and ease of maintenance, installers should note that it is specifically designed for 110mm pipework and requires careful adherence to standard drainage depth regulations.

All features

Model Part Number	4D850
Brand	Osma

Extended Product Information

FAQs

Is this gully suitable for foul water systems?

Yes, it is designed for both foul and surface water gravity drainage systems.

Can this be used for deep drainage installations?

Yes, it is certified for use at installation depths of up to 10 metres.

What is the primary benefit of the rotating top?

The rotating top allows you to align the square grid with surrounding ground surfaces, such as patio pavers, without rotating the main gully body.

Does this gully come with a trap?

Yes, the unit is fully trapped to prevent foul odors from escaping the drainage system.

How do I perform maintenance on this gully?

Maintenance is simple; the grid can be removed to allow for rodding access to the drainage pipework and to clean out the internal trap.

Is this gully compatible with standard 110mm PVC pipes?

Yes, the 110mm plain ended outlet is designed for universal compatibility with standard gravity drainage pipe systems.

Troubleshooting

Water is pooling around the gully grid

Clear the grid of debris and ensure the internal trap is free from blockages.

Odors detected near the gully

Check that the internal trap is filled with water; if the gully has been dry for a long period, add water to reset the seal.

Pipe connection is leaking

Check the pipe seal for debris or damage; ensure the 110mm pipe is fully pushed home into the outlet socket.

Pros and Cons

Pros

Rotating square top simplifies alignment with hard landscaping
Easy access for rodding and routine maintenance
Trapped design prevents sewer gas odor release
Lightweight build reduces manual handling risks
Suitable for deep installations up to 10 metres

Cons

Specific to 110mm pipe dimensions
Requires proper bedding to prevent ground settlement
Access cover must remain accessible for maintenance

Setup, Compatibility & Care

Ensure that the excavation is prepared with appropriate granular bedding material to support the gully base. Verify that the 110mm pipework is correctly chamfered and lubricated before insertion into the plain-ended outlet to ensure a watertight seal. Once installed, backfill around the gully with care to avoid displacement. For ongoing care, periodically remove the grid to clear any collected silt or organic debris that may have bypassed the grate. Ensure that no heavy vehicles are positioned directly over the gully unless it has been protected by a suitable load-bearing cover assembly.