Lisboa filter tank drain valve – IFS004970700

Lisboa filter tank drain valve – IFS004970700

This replacement drain valve allows water to be drained from the matching Lisboa filter tank. It is used to repair a leaking or mechanically damaged drain, for example before winterising the filter.

What is included

Drain valve under catalogue code IFS004970700. This is neither the top air bleed nor the six-way control valve.

Selection details

Identifying the correct part

Shown as position 8 in the Lisboa FV 500 drawing from 2023. Compare the original drain and catalogue code; this does not replace the different Nilo ISP040290 assembly.

If you are unsure about the version, send us a photograph of the original part and the filter label. Matching the actual design is more reliable than using the range name alone.

Replacement and checks

Before dismantling, switch off the pump, prevent it from starting and release filter pressure as instructed in the filter manual. Open the joint only after depressurising. Clean the seating surfaces and inspect adjacent parts; a new seal will not repair a damaged thread or cracked body.

Follow the instructions for your particular tank during fitting. After assembly, bleed the filter and check the repaired joint for leaks when restarting. Do not overtighten plastic components.

Where to find the part

The blue arrow on the original exploded view marks the component. The drawing is a reference guide; package contents are stated above.

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