FlowLink Hardware Changes (Q4 2022)

Updated May 28, 2026 2 min read

What's changed and why?

  • The “combo” decoder has wires to support a flow sensor and wires to support a master valve.
  • The WTFL-XT is supplied by Tucor as an OEM partner for HPDS.
  • Tucor is no longer able to source key components for the WTFL-XT and have ceased manufacturing the product.
  • Tucor has moved to a new hardware platform for their decoder technology which is what HPDS will source moving forward.

Technical Specs: Key differences with the new hardware


Updated Specifications: WTFL-FFXT and WTFL-MVFXT

  • There are now two decoders for FlowLink, one for the flow sensor and one for the master valve.
  • The wiring process is identical to the combo decoder.
  • The decoders have diagnostic LEDs and are rated for full submersion.

WTFL-XT & WTFL-XT+ (The product numbers stay the same)


Replacement Part Numbers: 

  • CT = 8500001
  • EXT = HPDSLD050LED
  • MVFXT and FFXT = HP3D-220-FMV-LED 
    • ⚠️IMPORTANT! This part number will replace both components FFXT and MVFXT. That means that if you ever need to replace the FFXT you will also receive and replace (if needed) the MVFXT, or vice versa. 

Wiring Diagram:


Diagnostics

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