
Reverse osmosis system
Watts WP-4, WP4-50, KP-4, RO-4M RO Replacement Filters
Compatible parts
Everything that fits the Watts WP-4, WP4-50, KP-4, RO-4M
Replacement filter info
Your replacement schedule
Each stage of the Watts WP-4, WP4-50, KP-4, RO-4M, the exact part that fits it, and when to change it.
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Stage 1: Sediment filter
Part RW-SED2510050, Filtro de sedimento Ready Water RW-SED2510050 5 micras 2.5" x 10" $8.99
Every 6–12 months
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Stage 2: Carbon block filter
Part OMB934-5m, Filtro de bloque de carbón Omnipure OMB934-5m, 5 micras, 2,5" x 10" $14.99
Every 6–12 months
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Stage 3: RO membrane
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Alternative for stage 3: RO membrane
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Stage 4: Carbon block filter
Part OMB934-5m, Filtro de bloque de carbón Omnipure OMB934-5m, 5 micras, 2,5" x 10" $14.99
Every 6–12 months
Manuals & instructions



