Fluval Drain Valve External Filter FX4, FX5 and FX6, Pack of 1

Cazaar

Fluval FX5/FX6 Purge Valve A20219 Genuine Fluval replacements Part SKU: A20219 Suitable for the Fluval FX5 (A218) external filter Suitable for the Fluval FX6 (A219) external filter

Amazon

Multi-purpose drain valve For Fluval FX4, Brondi and FX6 filters Easy to use