Fuji Keiki develops and manufactures water-related equipment in Japan.
Official website ↗Technical documentation
Source documents, product data, and evidence status.
This page separates published Fuji Keiki product information, representative laboratory methodology, and field evidence so each source is read within its proper scope.
Manufactured by Fuji KeikiJapanese water-technology developer and manufacturerVisit the official Fuji Keiki website ↗
Documentation status
Published information is not the same as U.S. approval.
Every item below is labeled by source and scope. Japanese certifications are presented as Japanese certifications; no U.S. certification is implied.
(15A–80A)
U.S. nominal-size orientation leads. Final dimensions, connections, pressure, and installation details require model-specific engineering confirmation.
U.S. potable-water, materials, lead-content, connection, and local-code documentation must be confirmed before claims are made.
Published construction data
Representative specifications—with limits clearly stated.
Published physical specification
- Body material
- Stainless steel
- Older published material grade
- SUS304
- Approximate body size
- 2.2 × 4.5 in. (55 × 115–116 mm)
- Approximate weight
- 1.5 lb (670–700 g)
- Applies to
- Representative published item—not every model
Required before installation
- Connection interface
- Pending
- Maximum working pressure
- Pending
- Operating temperature
- Pending
- Pressure drop / flow curve
- Pending
- Seals and wetted materials
- Pending
Laboratory methodology
Representative BeLife 20A performance test.
Fuji Keiki's published certification summary identifies the instrument, water, piping, temperature, pressure, date, and an FBIA-designated test institution. The public summary does not name the legal laboratory entity.
Representative modelBeLife 20A
Testing organizationFBIA-designated test institution; legal laboratory name not stated in the public summary
Measurement instrumentNanoSight NS500
Test waterUltrapure water
Piping length49 ft (15 m)
Water temperature68.9°F (20.5°C)
Test pressure29 psi (0.20 MPa)
Measurement dateFebruary 26, 2025
Reported concentrationAbout 18.1 million bubbles after blank-water correction
Reported average diameter142.9 nm
Published documents & evidence
What you can review today.
Each source answers a different question: product certification, measurement method, or documented field performance.
FBIA performance certification summary
Representative BeLife 20A ultrafine-bubble generation data and method conditions published by Fuji Keiki.
JWWA registrations Z-393 and Z-399
Japanese Water Works Association registrations cited by Fuji Keiki for the published domestic product. These are not presented as U.S. approvals.
FBIA ultrafine-bubble measurement standard
Measurement context for particle-tracking analysis and ultrafine-bubble size and number concentration.
JR East operating-restroom study
A 55-day facility study, maintained separately from laboratory certification and controlled testing.
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