Thomas Dudley Beta+ Telescopic Bottom Inlet Valve — 327645
The Thomas Dudley Beta+ 327645 is one of the most adjustable bottom-entry float valves on the market, designed to fit virtually all float-operated WC cisterns. Featuring a patented multi-directional adjustment design, this Part 3 Ball Valve provides exceptional flexibility by allowing the float arm to be positioned laterally or rotated up to 180 degrees to suit tight space constraints. Built to British Standards (BS1212) with a robust 1/2" brass tail, it delivers reliable and durable performance for both domestic and commercial installations.
Identification Guide:
MPN: 327645 | Connection: 1/2" BSP Brass Tail | Height Adjustment: 203mm (8") – 292mm (11.5") | Arm Extension: 185mm – 285mm
Key Features
- Patented Multi-Directional Adjustment: Swivel arm allows the float to be fixed through 180 degrees for easy alignment.
- Extendable Float Arm: Telescopic rod extends from 185mm to 285mm to avoid internal cistern obstructions.
- Variable Height: The telescopic body adjusts from 8" to 11.5" in 1/2" increments to fit various cistern depths.
- Professional Brass Tail: All-new heavyweight brass connection is stronger and more durable than average plastic threads.
Technical Support
Access the official manufacturer documentation for installation guidance:
Installation & Maintenance
The float for this valve is sold separately (standard 5/16" BSW float connection). Before installation, flush supply pipes to ensure they are free from debris. Do not use sealing compounds or solvents on plastic or rubber surfaces; hand-tightening plus a 1/4 turn is recommended for a watertight seal. Includes integrated backflow prevention to stop contamination of fresh water supply.