Hydroflo Telescopic Bottom Inlet Compact Delay Brass Tail

Hydroflo Telescopic compact delay fill bottom inlet valve with brass tail.



Designed for use as a replacement in most plastic and ceramic exposed and concealed cisterns. Compact delay fill models save water and support BREEAM by only allowing a cistern to start refilling once flushing is complete. The unique inlet float arm makes it impossible for the float to become detached. This high quality inlet valve has two built in backflow prevention devices making it one of the safest valves available. Hydroflo Telescopic delay fill bottom inlet valve with brass tail.

Telescopic valves can have a joint beneath the waterline when installed. To ensure full compliance to water regulations when fitting, please ensure the joint is above the critical waterline.


  • Supplied with 'Air Gap' as standard since 2004
  • Unique key is provided for simple and safe removal of the filter
  • Adjustable Height 8" - 11.5"
  • 1/2" BrassTail
  • Stock Item - Available for next working day dispatch


Our current range of fully compliant Hydroflo inlet valves, come pre-fitted with a flow regulator, so no need for a flow restrictor. Our previous range were supplied with a flow restrictor, which needed to be removed for water pressures below 1.5 bar. As these inlet valves operate on an equilibrium principle, which uses the supply water pressure against itself to operate the valve they are suitable for use on water pressures between 0.1 bar and 14 bar.

If a Hydroflo inlet valve is not closing off, it may only need for the diaphragm washer and filter to be cleaned. Remove the large white nut attached to the float arm, This will give you access to the diaphragm washer, remove the washer, and clean with running water. To remove the filter, use the white key stored on top of the blue overhead discharge nozzle. This has a Bayonet fitting to help remove the filter unit. Clean the filter of any dirt and debris. Replace the cleaned filter and diaphragm washer, and re-assemble the unit.

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