Dudley Turbo S1-11 8.5" Duoflush Siphon — WRAS Approved
The Dudley Turbo S1-11 (8.5 inch) is a heavy-duty, high-performance WC siphon specifically engineered for Wellbottom and Dauntless cisterns. Renowned for its reliability in both high and low-level installations, this siphon features a patented 2-part design. This allows the main body to be unclipped and removed for maintenance in under 5 minutes, without needing to disconnect the water supply or dismantle the cistern. WRAS approved and built for longevity, it is the professional choice for maintaining traditional narrow cistern systems.
Identification Guide:
MPN: S1-11 | Siphon Height: 8.5" (216mm) | Outlet Size: 38mm (1.5") | Compatibility: Wellbottom & Narrow Cisterns
Key Features
- Rapid Servicing: 2-part assembly allows for diaphragm replacement without removing the downleg.
- Durable Material: Constructed from high-impact, heavy-duty plastic for chemical and wear resistance.
- WRAS Approved: Fully compliant with UK water regulations for efficiency and safety.
- Universal Application: Ideal for high-level "Pull Chain" or low-level lever cisterns.
Maintenance Tip
To avoid future downtime, we strongly recommend keeping a spare diaphragm on hand. The internal washer is a wear-and-tear part that perishes over time. You can find the genuine replacement diaphragm (SKU: FTB849) here.