AguaStella Matte Black Water Filter Faucet AS9MB - Sleek RO Faucet

Our review of the AguaStella AS9MB finds it best for homeowners or renters who want a compact, stylish dedicated faucet for a reverse osmosis or under-sink filtration setup; the single biggest reason to buy is its combination of a food-grade T304 stainless steel build and a clean matte black finish that resists corrosion and stays looking new with minimal care. The faucet installs quickly with two included adapters so most DIYers can hook it to 3/8' or 1/4' tubing in under 10 minutes, and the 360 degree swivel spout adds everyday convenience.

Key Features

• Matte black finish: A corrosion- and stain-resistant coating that keeps the faucet looking consistent with modern kitchens and requires only a soft cloth for cleaning.
• T304 stainless steel: Food-grade, corrosion resistant material that avoids lead and is built to last in a wet environment.
• Ceramic cartridge: The internal cartridge is tested for 500,000 cycles to provide a durable, drip-free valve operation.
• 360 degree swivel spout: A user-friendly rotating spout that lets the faucet serve small bars or tight sink areas with flexible reach.
• Compact height: Overall height of 10-3/5 in makes it suitable for low-clearance installations and under-cabinet ro units.
• Easy installation: Includes adapters for 3/8' and 1/4' tubing so typical household reverse osmosis systems connect without additional fittings.

Who It's For

This faucet suits anyone adding a dedicated water filter or RO outlet at a kitchen counter, bar, or utility sink who wants a contemporary matte black look and durable stainless construction. It is particularly useful for people who prefer a compact, easy-to-install faucet that swivels for flexible use.

Those who need a very high flow rate for rapid filling or who require a pull-down sprayer function should look elsewhere, as this product is designed specifically as a filtered water faucet with a moderate flow and fixed spout style rather than a multi-function kitchen tap.

Pros & Cons

Pros

• Stylish matte black appearance that matches modern fixtures and resists discoloration.
• Durable T304 stainless steel construction with a ceramic cartridge rated for long-term, drip-free use.
• Includes 3/8' and 1/4' adapters for fast DIY installation without specialized tools.
• 360 degree spout swivel adds practical reach for small sinks and bars.

Cons

• Flow rate feedback is mixed; some users report slower drips rather than a strong stream depending on system pressure.
• Several customers noted occasional leakage issues, so careful tightening and proper tubing installation are important.

Specifications

Brand	AguaStella
Material	T304 stainless steel
Finish	Matte black, corrosion resistant
Overall height	10-3/5 in
Spout motion	360 degree swivel
Included adapters	1 for 3/8' tubing, 1 for 1/4' tubing
Cartridge	Ceramic cartridge tested 500,000 cycles

Our Verdict

The AguaStella AS9MB is a sensible choice for people who want a dedicated RO or filtration faucet with a modern matte black look and long-lasting T304 stainless steel construction; it offers strong value when appearance, material quality, and simple DIY installation are priorities, though buyers should accept a moderate flow and confirm connections to avoid leaks.

Frequently Asked Questions

Will this faucet fit my reverse osmosis unit?
The package includes adapters for 3/8' and 1/4' tubing, so it fits most RO and under-sink filtration systems that use those common tubing sizes.

Is the finish durable against rust and stains?
Yes, the matte black finish is corrosion and stain resistant and can be maintained with a soft cloth or sponge in daily use.

Does the faucet have a high flow rate?
Flow varies with system pressure; some users report a steady stream while others see a slower drip, so performance depends on your filtration setup and water pressure.