Zodiac TRi pipe-union O-ring
Diagram position: 30
Sealing ring for the cell-housing pipe connection. Clean the groove, compare the original ring and inspect the mating surfaces when replacing it.
Catalogue reference: W151271.
Advice from a pool technician
Select primarily by catalogue reference and the original version. TRi and TRi Expert may share some mechanical components, while electronics and connectors can differ between generations.
Zodiac TRi pipe-union O-ring
Sealing ring for the cell-housing pipe connection. Clean the groove, compare the original ring and inspect the mating surfaces when replacing it.
Purpose of the part
This component repairs the water-circuit part of the electrolytic cell. If it leaks, first establish whether the seal itself, its groove or the surrounding housing is damaged. Replacing a ring alone may not resolve cracked or distorted mating surfaces.
Identification and selection
Diagram position: 30
Catalogue reference: W151271
Replacement and checks
Before opening the water circuit, switch off the equipment, stop circulation and release pressure as instructed. Clean mating surfaces and inspect seals. Avoid overloading plastic threads during reassembly and check for leaks after restarting.
If unsure about the version, send photos of the original component and equipment label to info@chemie-bazen.cz.
The O-ring photograph is illustrative and reused from our catalogue. Match this item’s reference and the original seal; do not infer dimensions from the illustrative photograph.
Position in the assembly
The blue arrow identifies the component in the original drawing. The unmarked original is retained in the gallery.

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