Dudley 8” Hydroflo Compact Delay Fill Bottom Inlet Valve with Brass Tail – 2025 Upgraded Version (370908)

Reliable, Quiet & Water-Saving – Now Upgraded for 2025

The Dudley Hydroflo 8” Compact Delay Fill Bottom Inlet Valve (370908) is a high-quality, WRAS-approved replacement valve designed for modern ceramic and plastic cisterns. Engineered for quiet and efficient refilling, this compact inlet valve fits neatly into tight spaces without interfering with other internal components.

With the latest 2025 upgrade, installation and maintenance are now even easier, ensuring longer-lasting performance, improved durability, and a simplified filter system.

2025 UPGRADED FEATURES:

• New 2-Piece Filter System – Replaces the previous 3-piece design for easier maintenance and improved reliability.
• No Filter Extraction Key Required – Prevents potential outlet valve obstructions for smoother operation.
• Stronger & More Durable Build – Enhanced materials for long-term performance.
• Simplified Installation & Maintenance – Fewer components mean quicker servicing and reduced maintenance costs.

PRODUCT FEATURES & BENEFITS:

• Product Code: 370908
• Compact Design – Ideal for tight cistern installations, ensuring no interference with syphon or flush valve.
• Adjustable Waterline Range (140mm - 220mm) – Provides flexibility for different cistern sizes.
• Professional ½” Brass Tail – Ensures durability and leak-free connections.
• Water-Saving Delay Fill Technology – Prevents unnecessary refilling by only activating after flushing is complete.
• Quiet Fill Operation – Minimizes noise during water refilling.
• Tool-Free Flow Regulation – Works efficiently across all water pressures without needing manual adjustments.
• WRAS Approved – Fully compliant with UK water regulations.

WHY CHOOSE THE 2025 MODEL?

• More Efficient & Reliable – The new simplified design reduces the risk of faults.
• Easier Installation & Maintenance – No tools required for filter removal, making servicing effortless.
• Long-Lasting Performance – Built with high-quality materials for durability.

The Dudley 8” Hydroflo Compact Delay Fill Bottom Inlet Valve (370908) is the perfect choice for professionals and DIY installers alike, providing superior performance, water efficiency, and reliability.

DETAILS

SPARES:  BE PREPARED -  The diaphragm in this Inlet valve will perish over time and diminish the flushing mechanism.   Consider purchasing a spare washer so you have it at hand when needed.  The link is here.

INSTRUCTIONS:  Instructions for the Inlet Valve can be found here. 

CHOOSING THE CORRECT SIZE 

There are 9 sizes in the Hydroflo Airgap Compact Float Valve.  You need to ensure you purchase the correct height please see second image.

FAQs

Q1. How do Dudley fillings valves cope with high and low water pressure.

The 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.

Video for Hydroflow Inlet Valve 

Dudley Hydroflo compact delay fill bottom inlet valve with brass tail 370908

FTB12739