Watts® WP-4, WP4-50, KP-4, RO-4M

Watts®

Watts® WP-4, WP4-50, KP-4, RO-4M Reverse Osmosis Systems

Compatible Replacement Water Filters & Reverse Osmosis RO Membrane.

STAGE 1 – Purtrex 5-Micron Sediment Filter. 93023 (Watts 104017) – Replace Every 6 Months
STAGE 2 – Omnipure Carbon Block Filter. OMB934-5 (Watts 101009) – Replace Every 12 Months
STAGE 3 – Reverse Osmosis Membrane. (Watts 110016) – Replace As Needed
OR
STAGE 3 – Reverse Osmosis Membrane. (Watts 110019) – Replace As Needed
STAGE 4 – Omnipure Carbon Block Filter. OMB934-5 (Watts 101009) – Replace Every 12 Months