I was cleaning my toilet and I found this part leaking. can this be repaired or do I have to just replace it?

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Looks the the fill valve vacuum breaker which is easily replaceable… but it is leaking into the tank which is not wasting water unless the fill valve will not shut off in that case I would replace the assembly which can be removed by shutting off the water supply and lifting the retaining nut up then pull the assembly up and off of the shank

This continues to leak when the valve is closed. Thank you for the guidance, I'll purchase the required parts and install.

as per fluidmaster:


"Replace the Top Cap Assembly (model 385) with master seal every 5 years"



Fluidmaster 385 Replacement Cap Assembly for 400A Fill Valves
Easy Installation and quickly repair your 400A toilet fill valve
The universal Fluidmaster 400A Toilet Fill Valve Cap replaces dirty, worn fill valve caps that maybe causing your toilet to fill slowing or with excessive noise. Made of durable materials that resist corrosion.

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Whole valve is $7.98, rubber replacement seal (no cap) is $2.98...time required to futz with fill valve and try to replace seal with the valve still in the tank....priceless. While technically fixable, I would opt to replace.



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