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Flagship product · Patented technology

Green Drain™
Patented protection
for floor drains.

One-way silicone seal that physically blocks sewer gases, viral aerosols, pests, and odors. Install in 30 seconds. No maintenance required.

HACCP Int. RG-04 NSF/ANSI 2 SGS QDF25-0049810-01 CE ETA-18/0536 EU MDR 2017/745 ASSE 1072-2020 CSA B79-2008 cUPC IAPMO 9301
Request a free audit → Request samples →
>99.9%
Aerosol Blockage · SGS
14
International certificates
58
Reviewed studies
2500+
ASSE life test cycle
Problem

The drain is a direct
path into your building.

The P-trap loses its water barrier after a few days of non-use, leaving an open path for gases.

  • ☠️
    H₂S, methane, ammonia
    Toxic and flammable sewer gases travel through the dry trap. H₂S is toxic at 10 ppm and fatal at 100 ppm.
  • 🦠
    Pathogenic and viral aerosols
    23 documented hospital outbreaks linked to drains (Carling, 2018). CRE, MRSA, Pseudomonas — direct route through the drain. Green Drain™ has been proven to block >99.9% of viral aerosols.
  • 📉
    Negative reviews and guest complaints
    There is a direct correlation between odor and a drop in ratings on Booking and TripAdvisor. One negative review costs more than an annual property protection plan.
Floor drain without a trap — pests and gases pass through freely.
Carling et al. — Am. J. Infect. Control, 2018
23
documented hospital epidemic outbreaks linked to steam drains
CRE
Carbapenem-resistant enterobacteria
MRSA
Methicillin-resistant Staphylococcus
VRE
Vancomycin-resistant Enterococcus
And so on
Pseudomonas aeruginosa
Product

Green Drain™
One-way silicone valve

Medical-grade silicone rubber. Four flexible ribs that adapt to any drain diameter. No glue, no expensive tools.

30 seconds
Tool-free installation
5+ years
Expected lifespan
11 sizes
32mm – 152mm
0 liters
Annual water consumption
Green Drain™ — cross-section of a one-way silicone valve with installed protection

Ready to order? Direct B2B supply — available immediately, fast shipping to Ireland, the UK and across the EU.

Request samples →
Provability

It is not a marketing claim.
Independently verified by SGS.

>99.9%
Blockade of viral aerosols
SGS Report QDF25-0049810-01
Organization
SGS S.A. — an independent Swiss certification company
Life test
ASSE 1072-2020 · 2500+ usage cycles
Certificates
SGSHACCPNSFCEcUPCASSEEU MDR 2017/745
SGS Control Group (without Green Drain™)
18.000 – 72.500
PFU of viral particles detected above the drain
SGS with GD 3 installed
Less than 5 PFU
Below the detection threshold · all 3 test circuits
Laboratory
SGS-CSTC
CNAS L0604 accreditation
Surrogate: MS2 bacteriophage (ATCC 15597-B1)
93×
Silicone strength above minimum (CRT Lab)
14
International certifications · 7 independent laboratories
2.500
ASSE cycle · 32 g opening force (IAPMO)
1.500+
Thermal cycles without degradation (DTI)
EU MDR 2017/745 · Medical device

Green Drain™ is
registered medical
device in the EU

The only one-way valve for floor drains with EU MDR Class I classification, EUDAMED registration, and ISO 13485 certification for infection control in healthcare and public facilities.

🏥
Class I
Classification
MDR risk
EUDAMED
Registered
DK-MF-000052289
⚙️
ISO 13485
Production under
medical QMS
🌍
27 EU countries
Covered
EU Declaration of Conformity
✓ Green Drain™
✓
Acts as a one-way mechanical barrier in floor drains.
✓
Blocks the upward flow of air and aerosols from the sewer network.
✓
Supports infection prevention and control (IPC) programs
✓
Reduces pathways of exposure to pathogens through floor drains.
✗ Green Drain™
✗
Does not prevent, diagnose, treat, or cure diseases.
✗
It does not guarantee a reduction in infection rates or clinical outcomes.
✗
Does not replace established hygiene and disinfection protocols.
✗
Does not come into direct or indirect contact with the patient's body.
Why MDR Class I?

Green Drain™ is non-invasive, non-sterile, and without measurement functions — does not come into contact with the body. According to Annex VIII of the MDR classification rules, this places it in the lowest risk level.

Despite its low class, the production system is satisfactory. ISO 13485:2016 — medical device standards — including traceability by lot and change control.

EUDAMED SRN
DK-MF-000052289
Basic UDI-DI
5745001471GreenDrainMDRJD
Certification
ISO 13485:2016 + ISO 9001:2015
Publicly available regulatory documents
EU Declaration of Conformity
Declaration of Conformity
MDR 2017/745 Compliance Declaration Signed — All 8 Variants
↓ Download PDF
IFU
Instructions for use
Intended use, installation, warnings, materials, traceability
↓ Download PDF
Technology
Technical summary
For architects, engineers, and IPC consultants — ASSE, ETA, QMS
↓ Download PDF
Register
Regulatory summary
An explanation of the MDR status in simple language for non-technical stakeholders
↓ Download PDF
One-way silicone valve
Block ↑
  • Sewage gasesH₂S, methane, ammonia
  • Viral aerosols99.9% SGS
  • Bacteria and biofilmCRE, MRSA, Pseudomonas
  • Parasites and unpleasant odorsFlies, cockroaches, and the stench of sewage
Green Drain™
Green
Drain™
Allows
  • Full water flowGD1.25: 29 L/min · GD6: 550 L/min
  • Easy cleaningRinse with warm water as needed.
  • Floor washing procedurePasses all waste without clogging.
  • Drain maintenanceQuick and easy removal
>99.9%
SGS · 58 studies · 2500+ ASSE · 14 certificates
SGSHACCPNSFCEEU MDR 2017/745
SolutionBlockadeAerosolsWater/godService
Green Drain™✓ always✓ >99.9%0 liters30 seconds
P-trapIt's drying outNovariableregularly
How does it work?

Physics, not chemistry.
Permanent protection.

Four silicone ribs hold the seal without glue. The weight of the water opens the valve. Without water—flow is shut off. Always.

1
At rest — closed

Gravity keeps the valve closed. An absolute barrier. It doesn't evaporate, it doesn't dry out.

2
When washing — open

The weight of the water opens the valve and ensures full flow.

3
Service — 30 seconds

It's removed without tools, rinsed under warm water, and put back in place.

4
Proven long-term durability in industrial conditions

Medical-grade silicone rubber. 2500+ ASSE cycles.

ASSE 1072-2020 · IAPMO 1554-25004
Request an audit → Library of Studies
▶ Video demonstration

Watch installation in 60 seconds.

Official video from Green Drain Inc. — the complete installation process from removing the grate to the finished guard. No plumber, no glue, no pipe modifications.

▶ Open video library
Certificates

14 international
certificates.

100+ countries — EU, North America, Australia, Scandinavia.

cUPC Listed
IAPMO File 9301 · until 2029.
ASSE 1072-2020
46 states of the USA · Canada
CE / ETA-18/0536
ETA-Denmark · 27 EU countries
NSF/ANSI 2
C0571796 · Food equipment
HACCP International
RG-04 · SSZ zone · until 2026
WaterMark Australia
WM-022837 · WMTS-522:2021
Prop 65 Compliant
CTT Lab · Lead & Phthalates: PASS
SGS Pathogen Test
QDF25-0049810-01 · CNAS L0604
Tested by DTI
226049 & 957187 · Tax Reg. 300
IAPMO Research & Training
Flow, evaporation, life cycle
Approval of the VA
Danish standard · Scandinavia
CRT Material Test
23.38 kN/m · 93× above min.

Do you need documentation for the project? Special Pack 2025 — all certificates and technical data in a single PDF.

Download PDF →
Sizes

11 models.
Every drain covered.

ModelDiameterFlowHeightApplication
GD 1.25 →1.25″ / DN3229.22 L/min26 mmCondensate drains, shower channels
GD 1.5 →1.5″ / DN4051.55 L/min28 mmShower drains, traditional P-traps
GD 2 →2″ / DN5082.50 L/min33 mmResidential buildings, hospitality
GD 2.5 →2.5″ / DN6572.50 L/min35 mmShowers, urinals, floor drains
GD 3 →3″ / DN80105.70 L/min51 mmShowers, urinals, floor drains
GD 3-3.5 →3-3.5″ / DN80-90105.70 L/min50 mmCommercial kitchens, traditional P-traps
GD 3.5 →3.5″ / DN90323.17 L/min51 mmPublic restrooms, showers
GD 3.5-4 →3.5-4″ / DN90-100323.17 L/min50 mmIndustrial kitchens, hotels, public restrooms, showers
GD 4 →4″ / DN100≥340 L/min51 mmFood service kitchens, commercial drains
GD 5 →5″ / DN125391 L/min42 mmIndustrial floor drains, urinals
GD 6 →6″ / DN150≥550 L/min51 mmCommercial kitchens, manufacturing, airports

Not sure which size you need? Send a photo of the drain — free model recommendation.

Ask us for advice →
Industries

Every environment
Requires protection.

Green Drain in 8 key sectors — all dimensions, all traps, EU regulatory frameworks.

Hotels and resorts

General cleaning in all guest bathrooms, the wellness area, and F&B facilities. The seal holds through seasonal closures—no dried-out traps in vacant rooms.

Learn more →

Hospitals and clinics

EU MDR Class I barrier for IPC programs. Passive protection of ICUs, operating rooms, and isolation units against H₂S and aerosols.

Learn more →

Restaurants and kitchens

HACCP-compliant CCP for drain contamination. Mechanical barrier against fruit flies in kitchen floors.

Learn more →

Food industry

EU 1935/2004 food-safe. CCP for drainage contamination in plants, cold storage facilities, and packing houses.

Learn more →

Airports

Thousands of terminal drains sealed without continuous operation. The seal survives nighttime low-flow periods.

Learn more →

Schools and halls

Seven-week summer breaks drain every P-trap. GD remains sealed throughout the entire summer break—no ritual rinse in September.

Learn more →

Industry and warehouses

H₂S and methane barrier for worker safety. ATEX-compliant design, resistant to CIP/SIP processes.

Learn more →

Nursing homes

Protection of immunocompromised patients from H₂S, viruses, and bacterial aerosols from drains. EU MDR documentation.

Learn more →

Detailed sector guide: 18 industries with size recommendations, EU certifications, and the EU regulatory framework.

All industries → Free audit
Installation

Installation in
Thirty seconds.
So simple.

No plumber. No tools. No fixtures. The entire facility in one afternoon.

7-day free trial

We come, install samples at critical points. You evaluate. No cost. No obligation.

1
Drain identification

Measure the diameter — Green Flow will send an accurate model for free.

2
Measure the diameter — choose a model

Internal diameter of the pipe (not the grate).

3
Drop-in — 30 sec/each

Silicone ribs are secured without glue. 30 seconds per drain.

4
Annual review — that's all

Silicone membrane. No service contracts.

Step 1 — Remove the grate
Step 1
Take off the grate.
Remove the existing grate or strainer from the drain.
Step 2 — Insert Green Drain
Step 2
Insert Green Drain™
Lower the seal 5–10 cm into the drain body for optimal flow.
Step 3 — Press into place
Step 3
Press on the spot
The silicone ribs conform to the drain and lock in place. It works immediately.
Step 4 — Put the grate back
Step 4
Return the grate
Done. 30 seconds of work, lasting security.
Specifications

Engineering
precision

Performance
Aerosol Blockage (SGS)>99.9%
Flow GD1.25 (ASSE Level U)29.22 L/min
GD6 Protocol (ASSE Level U)≥550 L/min
GD5 Pressure (DTI)200 Pa
ASSE 1072 cycles (IAPMO)2,500 · force 32g
Thermal cycles (DTI)1,500+ · 93°C/15°C
Water/god0 L
Energy/yearzero kilowatt-hours
Material and installation
MaterialMedical-grade silicone rubber
SizesGD1.25 – GD6 · 11 models
Diameter32–152mm
Tolerance±2mm (silicone ribs)
Installation toolsThere is no
Silicone temperature-40°C to +100°C (tested)
Chemical resistance (CRT)H₂SO₄, NaOH, UV 500h, ozone 100h
Certificates14 international standards

Are you interested in the installation? Watch the video — 30 seconds, no tools.

Watch video →
FAQ

Frequently Asked Questions

Yes. Green Drain is available in 11 sizes from 1.25″ to 6″ with a ±2 mm tolerance thanks to its silicone ribs. It fits every standard drain.
No. Drop-in design — just drop it into the drain. No tools, no glue. 30 seconds per drain.
No, Green Drain allows full water flow.
Expected service life is about 5 years according to ASSE 1072-2020 (2500+ cycles · IAPMO 1554-25004). Medical-grade silicone resistant to chemicals and temperatures from -40°C to +200°C.
Green Drain is especially effective here. A standard P-trap dries out in a few days, while Green Drain stays sealed without water—ideal for seasonal facilities.
Yes — we come to the site and leave samples for 7 days free of charge. You decide. No cost, no obligation.
There is no minimum order for B2B. Order as much as you need.
Optimally 5–10 cm below the end of the tube. Silicone housings are compressed for a snug fit—no glue.
In most cases, no — Green Drain is a removable, non-installed device that does not alter the installation. For commercial properties, check local regulations.
Yes. The medical-grade silicone has been tested at –40 °C (no brittleness) and 100 °C (hot water, steam). It is chemically resistant to sulfuric acid, NaOH, and standard disinfectants according to CRT laboratory testing.
Call to action
Green Drain
Free audit · 7-day trial

We'll come in person.
At your facility.
No obligation.

We audit and install samples, and you see the results under real-world conditions.

Request a free audit → 📞 +353 83 406 9819
📄 Download the specificationsSpec Pack 2025 · PDF · 46 pages 🛒 Online storeOrder online · Fast delivery ▶️ Watch the videoInstallation · YouTube
HACCP · NSF · SGS · CE · cUPC 14 certificates 100+ countries