Dudley Turbo 88 Fixed Height 8.5" 2-Part Dual Flush Syphon — 319023
The Dudley Turbo 88 (319023) is a market-leading fixed-height syphon designed for low-level lever-operated cisterns. Its unique 2-part design allows the main body to be removed for servicing without disconnecting the cistern from the wall. Featuring DuoFlush technology, it provides full and water-saving reduced flush options (press and release for full, press and hold for reduced), making it an eco-friendly choice for modern and traditional WC repairs.
Identification Guide:
MPN: 319023 | SKU: FTB433 | Height: 8.5 Inch (216mm to spillover) | Outlet: 38mm (1.5") | Capacity: 6/7/9 Litre Convertible
Key Features
- Simple Servicing: 2-part body means no need to take the cistern apart to change the diaphragm.
- Universal Fit: Ideal replacement for syphons in most low-level lever-operated cisterns.
- Internal Overflow: Built-in safety to prevent flooding if the fill valve fails.
- Convertible Flush: Easily adjustable for 6, 7, or 9-litre flushing requirements.
Sizing & Compatibility
Ensure you order the correct height. This listing is for the 8.5" Fixed Height. If you require an adjustable model, see the Turbo 88 Adjustable here or the Turbo Edge here.
Choosing the Correct Size
Measure from the bottom flange of the threaded tail to the moulded ridge on the domed cap (the spillover point). For the 8.5" model (FTB433), this measurement should be 216mm.
| Height (mm) | Size to Purchase | SKU Link |
|---|---|---|
| 178 | 7" | FTB430 |
| 191 | 7.5" | FTB431 |
| 203 | 8" | FTB432 |
| 216 | 8.5" | FTB433 (This Item) |
| 229 | 9" | FTB434 |
| 241 | 9.5" | FTB435 |
| 254 | 10" | FTB436 |
Spares & Accessories
Technical Resources
- Official Data Sheet (Dimensions)
- Video: How to measure the water line
- Video: Fitting a Turbo 88 Syphon
- Installation Instructions (Mono/Dual Flush Conversion)
- Video: Servicing the Turbo 88 (Diaphragm & C-link change)
Questions & Answers
Q: Does this syphon have an internal overflow?
A: Yes, it acts as an internal overflow as long as the spillover point is below any external holes in the cistern.
Q: How do I convert this to a single flush?
A: Remove the blue body, release the C-link, and place the black rubber washer over the piston rod before reassembling.
Q: Can I use this with a close-coupled toilet?
A: Yes, but ensure the threaded tail is trimmed to within 2-3mm of the back nut to prevent flush throttling.
Q: What are the white plugs on the side for?
A: They adjust flush volume. Removing plugs reduces the volume of water used during the full flush cycle.