Q7 Under-Sink Reverse Osmosis System

Reverse osmosis gives the deepest level of filtration you can install under the sink — and usually the most cumbersome maintenance too. The Q7 keeps the filtration and removes the hassle: the cartridges are replaced in a single twist, without dismantling filter housings or shutting off the water.

The four filtration stages

• Stage 1 — 5-micron sediment filter: removes sand, rust and particles. Up to 2,000 liters or 12 months.
• Stage 2 — 5-micron carbon block (coconut): reduces chlorine, off-tastes and odors. Up to 2,000 liters or 12 months.
• Stage 3 — osmosis membrane: removes dissolved solids, heavy metals, salts and bacteria — a level that carbon and sediment filtration alone can't reach. Service life 2–4 years.
• Stage 4 — 2-micron carbon inline filter: final taste polishing before the faucet.

Why this system

• Twist replacement — no technician: the cartridges are replaced by hand and discarded. No filter housings that accumulate bacteria.
• Built-in check valve: no need to shut off the water when replacing filters.
• Storage tank and dedicated faucet: purified water is available immediately, without waiting for the system.
• Compact: fits a standard kitchen cabinet under the sink.

Replacement filters

Sediment WAT-FLCA-PP-7401 · carbon WAT-FLCA-CTO-7402 · membrane WAT-FLMB-7403 · inline filter WAT-FLCA-CTO-7404. We send you a reminder when it's time to replace — no need to remember.

Before installation

The system connects to a cold water point under the sink and requires a hole in the countertop for the dedicated faucet. At high water pressure, installing a pressure reducer is recommended.