The question is unclear. It refers to "90-250mm drainage" and "the same floor," but the relationship between these terms is not specified . It could be referring to the size of a drainage pipe, a distance between a drain and a toilet flange, or something else entirely. To provide a helpful answer, more context is needed about what "90-250mm drainage" refers to in this specific situation.

For example, if the question is about using a standard 3" (approximately 76mm) toilet drain, a Reddit user , citing the potential for clogs, suggests it might be better to use a proper 90-degree fitting for a toilet drain. A standard 90-degree elbow might not be ideal.

If the question refers to the height difference between the floor and a toilet flange, there are various ways to address it, including lowering the tee in the stack or creating a platform to bridge the gap. However, any changes to plumbing should be done according to local codes and potentially with the approval of a plumbing inspector.

Wall Sleeve Floor Sleeve for Pipe 250mm Drainage ...

eBay

https://www.ebay.com › ... › Pipe Fittings

eBay

https://www.ebay.com › ... › Pipe Fittings

Wall / floor sleeve 250mm for pipe . The sleeve has a protective function for the pipe when it passes through the ceiling, wall or foundation of the building ...

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250mm Underground Sewer Pipe & Fittings

Drainfast

https://www.drainfast.co.uk › products › sewer

Drainfast

https://www.drainfast.co.uk › products › sewer

Complete plastic underground sewer systems with 250mm outside diameter. High quality products available to purchase for quick delivery.

250mm X 250mm Brushed Nickel Stainless Steel 304 ...

Made-in-China.com

https://comfortdrains.en.made-in-china.com › product

Made-in-China.com

https://comfortdrains.en.made-in-china.com › product

250mm X 250mm Brushed Nickel Stainless Steel 304 Triangular Floor Drain ... 90 Elbow Fittings Same Floor Drainage Fittings HDPE Fitting. US$1.00-2.00.

$5.00 In stock Review by MIC_BUYER Free delivery

Can I use a standard 3” 90 for a toilet drain? : r/Plumbing

Reddit · r/Plumbing

8 comments · 4 years ago

Reddit · r/Plumbing

8 comments · 4 years ago

It's not ideal (less sweep in the elbow has more potential for clogs), but sure. You could also build a platform to fill the gap between the ...

8 answers · Top answer: Ya, you’ll be fine

Missing: ~~250mm~~ ‎| Show results with: 250mm

Elbow Drainage Pipe PVC 90° Elbow Inspection Port ...

eBay

https://www.ebay.com › ... › Drain Components

eBay

https://www.ebay.com › ... › Drain Components

90 degree drainage elbow . Color: white. Size: common 50mm 75mm 110mm 160mm 200mm 250mm. With inspection port 50mm 75mm 110mm 160mm.

$3.72 In stock $3.99 delivery

PVC/Plastic/Drainage Floor Drain Cover with Gulley Trap ...

Made-in-China.com

https://cnyonggao.en.made-in-china.com › product › C...

Made-in-China.com

https://cnyonggao.en.made-in-china.com › product › C...

Size: 50mm - 250mm . Certificate: Kitemark. Model Number, UDD042, Material, PVC ... 90 Elbow Fittings Same Floor Drainage Fittings HDPE Fitting. US$1.00-2.00.

· Review by MIC_BUYER

Siphonic drain, 250 x 250 mm. Side exit With filter

Roser Group

https://roser-group.com › ... › Floor drains

Roser Group

https://roser-group.com › ... › Floor drains

This 250x250mm siphonic drain is made of AISI 304 stainless steel, has a side outlet, a filter basket for solid waste, and a drainage capacity of 90 l/min.

Cast Iron Soil Pipe and Fittings for Drain Waste & Vent

Bibby-Ste-Croix

https://www.bibby-ste-croix.com › upl › products

Bibby-Ste-Croix

https://www.bibby-ste-croix.com › upl › products

PDF

Bibby-Ste-Croix cast iron pipes have no fire hazard, quiet operation, strength, and are easy to clean, service, and handle.

Underground Drainage: Installation and Principles

JDP UK

https://www.jdpipes.co.uk › underground-sewer › under...

JDP UK

https://www.jdpipes.co.uk › underground-sewer › under...

Jun 7, 2019 — This is our guide to the principles of installing a foul water underground drainage system in England & Wales following Building Regulations Part H.