Call Berkey. the casing is plastic.

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Water Filter Replacement Parts for Big Berkey Black BB9-2 Water Filters & PF-2 Fluoride Filters - Includes 2Black BB9-2 Filters and 2PF-2 Fluoride Filters

Q: Are these filters gravity fed? I installed it in a bucket and filled it with water but nothing coming out bottom.

Yes, these filters are completely gravity fed. Assuming your black filters are new, they should first be primed. You can find YT videos on this, but it amounts to holding the thick brown rubbery washer that should have come with your filters at the very end of the filter stem and pressing it gently against a slow-running water faucet tip (like your kitchen sink) until you feel the weight of the filter increasing and begin to see water droplets beading up along the entire surface of the filter. If black filters have been previously used (or periodically in your own use), you should take a Scotch type kitchen scrub pad and scrub the entire surface of the filter to remove any build up on the surface – you should not have to re-prime filters that have previously been used. Note that at some point in their life cycle, these filters will become totally plugged up and must be replaced (evidenced by extremely slow gravity-induced drip rate after having attempted to scrub the outer surfaces of the filters). You don’t mention the condition of the water you’re attempting to filter, but the cleaner it starts the filtering process, the faster the gravity-fed drip rate will be. Extremely dirty water should be pre-filtered using coarser filter materials such as gravel, sand, t-shirt type cotton fabric, etc. Hope you’ve found this helpful in response to your question.

Q: Does this have any certifications like the original Berkeley filters?

I checked out the material and it was corn husks or something like that. So, I decided to spring for the Berkey filters.

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Product ID: 439778079

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Water Filter Replacement Parts for Big Berkey Black BB9-2 Water Filters & PF-2 Fluoride Filters - Includes 2*Black BB9-2 Filters and 2*PF-2 Fluoride Filters

Have a Question? See What Others Asked

Are these filters gravity fed? I installed it in a bucket and filled it with water but nothing coming out bottom.

Does this have any certifications like the original Berkeley filters?

will it filter giardia out?

bpa free?

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