9500 Tube Connector Assembly, FL28137-16, FL28137-20, FL28137-24

This is the Fleck 9500-series tube connector assembly, the bayonet-style fitting that joins a commercial control valve to the distributor tube inside the mineral tank, available for 16", 20" and 24" tank sizes as FL28137-16, -20 and -24. It allows the valve to be lifted off for servicing without disturbing the riser tube or resin bed, and carries the full flow of the system between the valve and the tank. WrekinWater supplies this assembly to installers and commercial engineers maintaining larger Fleck 9500 water treatment systems.

Technical specifications

Symptoms that mean you need this part

• Water is leaking or weeping from the joint between the control valve and the tank riser
• The valve is difficult to lift off or reseat during servicing because the bayonet connector has seized or worn
• The connector body shows cracking, distortion or heat damage around the seal faces
• Repeated o-ring replacement no longer stops the leak, indicating the connector body itself is worn or out of tolerance

Why it fails / why it matters

On commercial Fleck 9500 installations the control valve isn't threaded directly onto the tank; it locates onto the riser tube through this bayonet tube connector, which is sized to the tank diameter and sealed with o-rings so the valve can be removed for servicing without cutting into the resin bed. Because this joint carries full system pressure and flow and is disturbed every time the valve is serviced, the o-rings wear first and the connector body itself can eventually crack, distort or wear out of tolerance at the sealing faces, at which point reseal kits alone won't stop the leak. Replacing the whole tube connector assembly restores a reliable seal without needing to strip and rebuild the resin tank.

Why buy this from WrekinWater

WrekinWater has stocked commercial Fleck, Autotrol, Clack and Pentair components for more than 15 years from its Bettisfield, Shropshire base, serving over 50,000 customers including installers working on larger 9500-series systems. Rated Excellent on Trustpilot, WrekinWater holds the connector in all three tank-diameter sizes so engineers can order the correct fit first time rather than risk downtime on a commercial water treatment plant.

How to fit it

1. Isolate the system at the bypass and fully depressurise before disturbing the valve or connector
2. Release the bayonet lock and lift the control valve clear of the tank connector, supporting the valve to avoid straining the riser tube
3. Disconnect the old tube connector from the riser tube and inspect the riser and tank collar for damage
4. Confirm the replacement FL28137 assembly matches your tank diameter (16", 20" or 24") before fitting
5. Fit new o-rings to the connector, lubricate lightly and locate it onto the riser tube and tank collar
6. Reseat the control valve onto the connector, engage the bayonet lock, restore pressure and check the joint thoroughly for leaks before returning the system to service