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RevalkWater 900 GPD tankless reverse osmosis system

900 GPD Tankless RO System

Fast, tankless RO filtration with mineral balance built in.

A compact three-stage under-sink system designed for strong flow, simple installation and alkaline remineralization without a bulky storage tank.

$299.00$329.00Save $30
900 GPD high-flow reverse-osmosis performance
Non-electric operation powered by water pressure
Tankless design for more usable cabinet space
Alkaline remineralization adds essential minerals after RO filtration
NYC service includedFree professional installation
Free consultation +1 929 666 3571
Comparison of a traditional RO tank setup and the compact RevalkWater tankless system

Compact by design

More cabinet space without a storage tank.

This system removes the bulky pressure tank used by traditional RO setups and keeps the filtration stages together in a clean, compact footprint.

The tankless layout leaves more usable room under the sink while delivering filtered water on demand.

Tank-free
No separate storage tank taking over the cabinet.
No electricity
Designed to operate from household water pressure.
More cabinet space
A simpler footprint for modern kitchens.
On-demand water
Clean water without waiting for a tank to refill.
RevalkWater three-stage tankless RO system installed beneath a kitchen sink

Three-stage purification

A clean under-sink system built around the essentials.

PPC pre-filtration, an RO membrane and a mineral stage work together in one compact assembly for everyday drinking water.

The dedicated faucet keeps filtered water separate and the slim cartridge layout keeps maintenance straightforward.

Stage 1 · PPC
Sediment and carbon pre-filtration before the RO membrane.
Stage 2 · RO
Reverse-osmosis membrane for the core purification stage.
Stage 3 · Mineral+
Final alkaline mineral remineralization stage.
Dedicated faucet
Filtered drinking water directly at the sink.
Filtration media illustration with calcium, magnesium and zinc mineral restoration

Mineral balance

RO purification followed by essential mineral restoration.

After reverse osmosis, the final mineral stage is designed to add useful minerals back into the water and support a more balanced finish.

The product concept highlights calcium, magnesium and zinc alongside advanced filtration for cleaner-tasting daily water.

Calcium
Part of the mineral-restoration concept after purification.
Magnesium
Included in the system's mineral-balance positioning.
Zinc
Additional mineral support in the finishing stage.
Balanced finish
A final stage focused on taste and mineral balance.
RevalkWater 900 GPD tankless RO system product view

High-flow performance

Up to 900 GPD in a compact non-electric format.

The product is positioned as a fast-flow tankless RO system for households that want strong daily output without an electric pump or storage tank.

Its three vertical cartridges and slim upper manifold are designed to keep the system compact while supporting high-flow filtration.

900 GPD
High daily production capacity for a tankless RO system.
Non-electric
No dedicated power connection required for operation.
Three-stage layout
PPC, RO and mineral cartridges in one assembly.
Compact format
Designed for efficient use of under-sink space.

NYC service included

Better water starts at home

Talk with a RevalkWater specialist to find the system that fits your home.
Free consultation Call us+1 929 666 3571
Professional installation
1-year warranty
Ongoing support