One device installed once on the water main turns every downstream drop into ultra-fine bubble (nanobubble) water — across homes, hotels, factories, farms, hospitals, and more. No power. No chemicals. No maintenance.
Built for the Gulf’s desalinated supply — where limescale, pipe corrosion and biofilm hit hardest. Proven on a 35-year pipe-scale removal with JR East.
Each request reviewed individually · Tailored deck within 1 business day · No sales call.
Also known internationally as a nanobubble.
Ultra-fine bubbles — the international term is nanobubble — are bubbles smaller than one micrometer in diameter. UFB DUAL generates them by passing ordinary mains water through a precision brass body. No power. No chemicals. No moving parts.
The science is the same in both vocabularies. The water on the other side of the device is functionally different.
Smaller than the wavelength of visible light. Water containing ultra-fine bubbles looks clear — and is.
Unlike regular bubbles that rise and burst in seconds, UFBs remain suspended in water for extended periods.
Internationally defined under the ISO Fine Bubble Technology standard. Same physics, recognised worldwide.
The Japanese / ISO term is ultra-fine bubble (UFB). The English-language research term is nanobubble. They refer to the same particle class under ISO 20480-1. We use both on this site interchangeably. UFB DUAL is the device that generates them at infrastructure scale.
| Approach | Coverage | Power | Maintenance | Cert. |
|---|---|---|---|---|
| Point-of-use (shower head / faucet) | 1 outlet | Some need power | Filter changes | — |
| Centralized powered nanobubble unit | Whole facility | 200 ~ 800 W | Service contract | Varies |
| UFB DUAL — water-main pressure-driven | Whole facility · every outlet | 0 W | None | JWWA Z-418 |
UFB DUAL is the only whole-facility nanobubble generator on the market that operates entirely on line pressure, requires zero maintenance, and is JWWA-certified for drinking water lines. Manufactured in Japan. Patent #6182715. Now shipping to India, Thailand, and worldwide.
Air, radio waves, viruses — none are visible, yet no one doubts they are real. Ultra-fine bubble (UFB) is the same: a formally standardized technology (ISO 20480) that Japan's largest companies have spent years verifying and building into their own products.
Millions of bubbles you'll never see — suspended in the water for weeks.
These companies build their own UFB products — they are not our customers. After demanding internal testing, each staked its brand on the technology and keeps selling it. That commitment is the clearest evidence the science works.
Washing machinesZABOON flagship washers have carried UFB since 2017 — a ~10-year bestseller built on the technology.
ShowersEcoAqua Shower SPA generates up to ~60 million UFB per mL — still fitted to 2026 models.
ShowersThe Comfort Wave Shower's 'Natural Care Mist' mode carries UFB to gently clean the skin (2024).
Water heatersIndustry-first water heater with a built-in UFB generator (2022) — every tap in the home runs UFB water.
Pipe jointsThe 'Ultra Fine Bubble Joint F' for new-build and retrofit keeps the inside of pipework clean.
Heat pumpsEcoCute heat pumps — all 53 models switched to UFB (2026). Plus the award-grade FINE VEIL showerhead.
Company names and logos are shown to indicate adoption of ultra-fine bubble technology across the industry. They do not imply endorsement of UFB TECH or UFB DUAL.
Ultra-fine bubble water —
at every tap, on every floor.
Beyond the technology, UFB DUAL® itself — the whole-building unit on this page — is deployed by major developers, public transport, infrastructure operators and stadiums across Japan.
Joint patent filed with JR East for pipe-scale removal (see the evidence below).
※ Partial list, in no particular order.
A urine-scale layer that had hardened for 35 years — so solid it wouldn't separate from the pipe even when sawn through. In a joint trial with JR East, UFB DUAL water lifted the entire scale layer off the PVC pipe in about 100 hours. A joint patent was filed.
Bore choked by scale
Scale lifted, bore reopened
Before · 35-yr scale
Scale layer detaching
After · bore reopenedA 6-year-old building with no prior pipe cleaning. An endoscope recorded the same drain line before installation and 6 months after. No effect at 3 weeks; by 6 months the buildup had lifted and washed away, leaving the pipe clearly open.
Before
After · 6 monthsPhotographs are from actual UFB DUAL field tests (JR East joint trial, 2021; in-house residence endoscope study, 2021). Cross-section is an illustration. Results vary with pipe condition, water quality and usage.
Pilot greenhouses, clinics, single tap-line.
Custom specifications are available for special installation conditions, pipe sizes 40A/50A or larger, and material changes for seawater applications. No need to give up because the environment is unusual — our engineering team supports partner sales with proven technical capability.
UFB DUAL effects are physical — micro-bubble action on water itself. The numbers below come from independent field trials in Japanese agriculture and industrial sites.
vs. untreated control
Cherry tomato field trial, Japan, 2023
reduction at same yield
Komatsuna trial — edible portion held
2.1× greater than control (=100%)
Rice paddy trial vs. untreated control
Results vary by water source, operating context, and crop or process. Detailed trial protocols and full datasets are available on request.
UFB TECH designs, machines, and tests every unit in-house from lead-free free-cutting brass. There are no moving parts to wear out. There is no electronic firmware to update. The device that ships is the device that runs for decades.
Designed by the team that filed Japanese Patent #6182715. JWWA- and JET-certified. Awarded the Good Design Award 2024 by the Japan Institute of Design Promotion.
“Our engineering brief had one constraint: it must outlast the building it is installed in.”
UFB DUAL is not a science experiment. Every claim on this site traces back to either Japanese regulatory certification or third-party laboratory verification. Documentation available on request.
Flow bands are indicative for typical incoming line pressure. Actual sizing depends on operating pressure, concurrent demand, and downstream piping. Free sizing as part of consultation.
Prices include international shipping (EMS, tracked). Import duties, VAT / GST, customs fees and local installation are NOT included and are the recipient’s responsibility. Shipment begins once payment is confirmed. 65A is made to order — JPY 2,860,000 (50% deposit to begin production, balance before shipment; about 2.5–3 months to delivery).
UFB DUAL is cut into the water main, before any branch — at the meter.
No power. No wiring. The water pressure already flowing into the facility drives the device.
From that point, every tap, sprinkler, line, and tank delivers ultra-fine bubble water.
UFB DUAL is installed on your main water line — usually just after the meter and main valve. Depending on the site, it may sit after existing equipment such as a filtration unit, so the pipe diameter at the install point can change. That diameter — the “bore” — decides which model you need.
Measure the diameter of your main pipe at the install point, or read the size stamped on the meter or valve.
Not sure which model? Tap the Price simulator (bottom-right) — answer 2–3 questions and get your model, connection type and price. Or see every model’s price in the specifications.
See all model prices
Single-family homes, apartments, condominiums. Install once on the meter — every shower, faucet, and laundry line runs on UFB water.
Hotels, ryokan, hot-spring spas, day-spas. Bath water quality, scale prevention in piping, reduced cleaning load across the property.
Nursing homes, dental clinics, dialysis facilities. Suppresses biofilm in water lines without chemical shock dosing — addressing Legionella risk.
Corporate farms, plant factories, greenhouses, hydroponics. Verified +10% yield, −20% fertilizer in field trials. UFB water across irrigation and washing.
Process water, parts washing, cooling, sanitation lines. One install on the 40A/50A main makes the whole facility a functional-water environment.
Restaurants, cafes, central kitchens. Cleaner produce washing, scale-free dishwasher lines, fresher water for cooking and brewing.
Hair salons, beauty salons, pet salons. UFB water for hair washing improves rinse-out and scalp feel; reduces residue on towels.
Fish farms, shrimp ponds, processing facilities. UFB water suppresses oxidation and microbial growth — without dosing equipment or chemical adds.
Stations, public washrooms, government facilities. Detaches decades of scale and biofilm in active operation. No demolition, no service downtime.
UFB DUAL is not a prototype. It has been operating at customer sites across construction, healthcare, public infrastructure, and seafood processing for years. Three representative deployments below.
UFB-treated water was integrated into the T-CARBON® low-carbon concrete program. The mix achieved its sustainability target while reducing CO2 dosing — a fraction of the load that comparable approaches require, sustained at production scale.
UFB DUAL was installed on the main line of four nursing facilities. Bathing water quality improved, cleaning loads dropped, and biofilm in the building water lines was suppressed — addressing Legionella risk without chemical shock dosing.
At a busy commuter rail station washroom, 35 years of accumulated urinal scale and persistent odor were physically detached over weeks of normal operation. No demolition. No service downtime. No chemical shock.
Case details are based on UFB DUAL operations in Japan. Approved international references available on request.
If your question is not below, send a single email and we will respond in writing — usually with diagrams.
Ask anythingIt's the same technology. The Japanese / ISO term is ultra-fine bubble (UFB). The English-language research term is nanobubble. Both refer to bubbles below one micrometer in diameter under ISO 20480-1. UFB DUAL is the device that generates them at infrastructure scale — powered only by water pressure, with no electricity or chemicals.
Yes, for someone qualified to cut and re-join water main piping. The device is inserted in-line at the meter, before any branch — no electrical work, no controller, no calibration. Most installations are completed in under a day by a licensed plumbing contractor. We provide installation drawings and bore-specific instructions.
UFB DUAL is driven entirely by line pressure, so adequate pressure is required for full effect. Typical building and industrial mains are well within range. As part of free consultation, we ask for your incoming line pressure, pipe diameter, and concurrent demand, and confirm whether the recommended bore size will perform.
We ship internationally and provide remote engineering support for installations. The device itself is self-contained and requires no firmware updates, no recurring service contract, and no proprietary tooling. Most regions have local plumbing contractors who can install it from the documentation we provide.
There are no moving parts, no filters, no consumables, and no electronics. UFB DUAL operates passively on pressure. In ordinary water it has no service requirement. In water with extreme particulate load, a sediment pre-filter (a standard part) may be recommended — but that is also maintenance-free in normal use.
UFB density is verified by particle-counting laboratory equipment, not by visual inspection. (Ultra-fine bubbles are sub-200 nm — optically invisible.) Independent third-party labs in Japan have measured device output across the model lineup. Test reports are available on request.
The device holds JWWA (Japan Water Works Association) certification, which is the Japanese regulatory standard for in-line components on the drinking-water supply. For markets with different regulatory regimes, we work with your local authority to provide the documentation required.
UFB DUAL is installed on the downstream (secondary) side of the water meter, on the building’s main supply pipe — before the branch lines — so every tap downstream delivers ultrafine bubble water. The position is the same for all sizes, and the device has no fixed flow direction (it works either way). Connection thread type varies by size.
Installation must be carried out by a licensed local plumber, using fittings/adapters compatible with local standards (BSP, NPT, PT, R, Rc) per pipe material and site conditions.
Every inquiry is reviewed individually by our team in Tokyo. For deck requests, we send a capability deck tailored to your industry and scale — within 1 business day (JST). English, Japanese, and Thai all welcome.
Tannyu Bldg 2F, 2-1-17 Nihonbashi
Chuo-ku, Tokyo 103-0027, Japan
