Astral Pool Auto Feeder Inline Union O-Ring (4401120102) astral This replacement is often chosen

This replacement is often chosen when the original valve is worn internally

Floating feeders are useful because they offer a simple

This replacement is especially useful when both sensors have aged together

while the 3/4 inch MPT threaded connection supports the intended plumbing style in supported applications

and this Polaris and Zodiac version is a black assembly designed for 380 cleaner applications using the 9-100-7007 reference

Astral Pool Auto Feeder Inline Union O-Ring (4401120102) astral This replacement is often chosenThe Astral Pool auto feeder inline union O ring is designed for compatible feeder plumbing applications where the union connection needs a reliable seal. An O ring like this is useful because it helps keep the inline union leak resistant while preserving the serviceable nature of the connection for future maintenance. This replacement is especially useful when the original O ring is worn, flattened, brittle, or allowing seepage at the feeder union.