Official Replacement Model: This Fluidmaster Torbeck 722U-068-P25 is the direct, upgraded functional replacement for the discontinued Opella Torbeck B661AT. It offers the same reliable performance with modern compliance standards.
Torbeck Height Adjustable Bottom Entry Fill Valve — 722U-068-P25
The Fluidmaster Torbeck 722U-068-P25 is a high-performance bottom entry fill valve designed for modern toilet cisterns. As the successor to the classic Torbeck range, it features a height-adjustable telescopic shank (273mm to 326mm) and a small footprint, making it ideal for compact spaces. It is fully AG Airgap / Reg4 compliant, ensuring your installation meets the latest UK water regulations.
Identification Guide:
MPN: 722U-068-P25 | SKU: FTB14024 | Replaces: B661AT | Inlet: 1/2" BSP Plastic
Key Features
- Adjustable Height: Total height ranges from 273mm to 326mm to fit most cisterns.
- Precise Water Level: Adjustment range from approx. 163mm to 218mm for optimal flush volume.
- Easy Maintenance: Features an easy-twist cap for quick access to the internal washer.
- Compact Footprint: Minimal internal space required, preventing interference with other components.
Compatibility Note
This unit is the recommended replacement for the legacy Opella Torbeck B661AT. It maintains the same quiet fill technology Torbeck is famous for while introducing a more robust adjustable mechanism and improved backflow prevention (Airgap).