The Green Drain™ helps keep your drains sealed and safe. Simply put, you place it inside your floor drains. It acts like a gate: keeping bad smells, sewer gases, and bugs from coming up while still letting water flow down. It’s easy to install thanks to its flexible silicone sides and works in drains of slightly different sizes. The Green Drain™ opens when water needs to go down and closes when it doesn’t, ensuring nothing can come up through idle drains. Plus, it’s great for any building, whether new or old, even where certain plumbing features, like trap primers, weren’t installed originally.
ModelPipe Size InchHeightL/MGPM
GD1.251.25” (31-36 mm)26 mm22.76.0
GD151.5” (37.45 mm)28 mm30.08.0
GD22″ (46-55 mm)33 mm45.412.0
GD33″ (68-80 mm)51 mm128.734.0
GD353.5″ (85-94 mm)51 mm193.051.0
GD44″ (95-104 mm)51 mm276.373.0
GD55″ (105-130 mm)51 mm
GD66″ (145-155mm)51 mm
4.9 Based on 25,750+ Reviews
Green Drain™ Waterless Trap Seal

Waterless Drain Trap Seal

Select Size (in):
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What Makes the Green Drain™ Stand Out?
Green Drain™ vs Others
Why Choose the Green Drain™?

Block Against Pathogens,
Odors, Gases, and Bugs!

Our patented technology creates a one-way valve creates seal to eliminate issues this helps prevent and blocks things getting up through floor drain such as gases smells and even pests.

Protect Your Pipes With a
5-Minute Installation

The Green Drain™ protects your pipes by maintaining a clear and clean waterflow so your pipes always stay safe and secure which helps with longetivity and prevents future problems.

Multi-Patented Floor Drain

Green Drain™ holds a significant number of patents in both the plumbing and water conservation sectors, making us one of the most innovative companies in the industry today.

We’re Certified Globally!

The Green Drain™ is certified in over 100+ countries and supports virtually every industry from residential to commercial and industrial applications.

Easy Installation
Step 1

Remove Grate

Step 2

Insert Green Drain ™

Step 3

Recess 2″ to 4″ 3 Into The Physical Pipe

Step 4

Close Grate

Step 5

Fasten Screws

Frequently Asked Questions​

The Green Drain™ is an eco-friendly, water-free trap seal that can be easily installed in any floor drain without tools.


Green Drain™ has a flexible silicone membrane (1-way valve) which allows liquids to pass freely through, and instantly closes and seals once liquids stop flowing.

The Green Drain™ is a simple and eco-friendly solution to prevent sewer odors, gases, pests, and pathogens without using harmful chemicals. It improves indoor air quality and ensures efficient drainage.

Unlike traditional trap seals, The Green Drain™ has a design that allows water to rinse its membrane, avoiding the buildup of dirt, hair, and grease. Yes, it’s Self-cleaning and does not block the water flow.

Green Drain™ is versatile and can be installed in various types of floor drains in both new and older buildings. It’s suitable for private homes, industrial settings, and public places like factories, schools, sports venues, office buildings, hospitals, restaurants, hotels, food production facilities, ships, RVs, and more.

The Green Drain™ is available in 8 different sizes, which are flexible and cover different measurements as shown below. Our drain fits in almost all floor drains with diameters according to following intervals:

  • GD125 (1.25”): 31-36 mm
  • GD15 (1.5”): 37-45 mm
  • GD2 (2”): 46-55 mm
  • GD3 (3”): 68-80 mm
  • GD35 (3.5”): 85-94 mm
  • GD4 (4”): 95-104 mm
  • GD5 (5”): 105-130 mm 
  • GD6 (6”): 145-155 mm

The Green Drain™ has been approved or tested by the following institutions – among others:

  • Danish Technological Institute – DS/EN 1253-1
  • ETA Denmark – VA approval
  • CE
  • IAPMO R&T- CUPC (American and Canadian national standards)
  • SCC Accredited
  • ANSI
  • ASSE-1072 Standards
  • IAPMO OCEANA- Watermark
  • HACCP International (Hazard Analysis & Critical Care Points) Global Certification – Food Safety
  • NSF (Food Safety)
  • Prop 65 Compliant
  • Tokyo Metropolitan Industrial Technology Research Institute

The Green Drain™ can be installed without the use of tools after the grating has been removed. Just push the Green Drain into the pipe and make sure it fits snug. For maximum flow of liquids passing down the drain, simply recess The Green Drain 2-3 inches within the drainpipe.

Yes, the Green Drain™ can be installed in a shower drain. We recommend recessing it 4-6 inches into the pipe for better liquid flow.

Yes, however, most bathtubs are manufactured with a drain plug that allows the user to control the drainage. We do not recommend replacing the drain plug with a Green Drain™.

Yes, the Green Drain™ replaces a traditional trap seal contributing numerous advantages:

  • Improves indoor air quality due to no sewer smell and gases.
  • Prevents wastewater penetration/backflow.
  • Self-cleaning and does not block the water flow.
  • Has no dry water seals and resists vacuum in the drainage system.
  • Reduces evaporation time in existing traps.

Yes, but check your local plumbing codes for acceptability.

Yes, Green Drain™ is NOT a traditional water trap and does not contain liquids.

  • It can be used in conjunction with Trap Primers or installed where Trap Primers are nonexistent. 
  • Check with your local jurisdiction for approvals to use Green Drain™ in lieu of water-fed Trap Primers.

Yes, Green Drain™ contains no liquids and functions perfectly in both orientations.

The Green Drain™ consists of UV resistant ABS housing, a silicone rubber seal/membrane (1-way valve), and an outer gasket consisting of four flexible sealing flanges for easy installation and perfect fit.

No, but it can withstand up to 4 lbs. of pressure before the silicone valve inverts. It provides a barrier against sewer odors, gases, and insects, fitting perfectly in floor drain openings to prevent contamination.

We hope this FAQ clears up any questions you have about the incredible GREEN DRAIN™! Feel free to reach out if you have more questions. We’re always here to help!

The Last Drain You’ll Ever Need


From 25,750 Ratings
Satisfactory customer experience
Reviewed in the United States on June 14, 2024

We have replaced the traditional water trap seals with GREEN DRAIN’s membrane trap seal, and this installation has eliminated all problems with odours coming from the floor drains. Being the largest airport in the Nordic Countries, hosting approximately 100,000 travelers daily, it is very important that our drains remain maintenance free, in order to always ensure a satisfactory customer experience.

GREEN DRAIN has really shown its worth in especially two places. Firstly, in the toilet facilities, where drain traps quickly evaporated due to the low amounts of water used in the new eco-friendly way of floor cleaning, compared to earlier methods. Secondly, in the ventilation rooms where vacuum also caused unpleasant smells from the sewer system. Both places GREEN DRAIN solved the problems easily.

Lars Jorgensen, Technical Services CPH | Copenhagen International Airport
Green Drain is the perfect solution
Reviewed in the United States on June 14, 2024

We have already installed the Green Drain with many of our customers. The use of Green Drain is of great satisfaction. Not only in floor drains but also in the air ventilation systems. Green Drain is the perfect solution to prevent penetration of insects and vermin from the drains.

Hoogendoorn BV – Sanitary Installation Company
…Performs far better than we ever dreamt of.
Reviewed in the United States on June 14, 2024

2½ years ago we installed GREEN DRAIN in our hotel rooms and in our swim center, which has generated man-hour savings in the daily cleaning routines. Previously we had to make sure that dirt wasn’t blocking the trap seal, that the trap hadn’t evaporated or wasn’t emptied by vacuum in the pipe system.

In the last 2½ years, we haven’t even touched GREEN DRAIN, which performs far better than we ever dreamt of. Now we don’t get unnecessary visits from guests in the reception regarding complaints about problems that GREEN DRAIN now prevents.

Michael Lysgaard, Technical Manager | DGI Huset Herning
Happy to tell my colleagues about Green Drain
Reviewed in the United States on June 14, 2024

Dear Eddie
Thank you very much for coming out with Chemform and introducing us to the Green Drain. As a food manufacturer,
Mondo Doro is always looking to improve our food safety protocols and hygiene standards.
The Green Drain is an ideal device for our business, we feel secure in the knowledge that nothing that is in our drainage
system can come back out to potentially contaminate our produce. It is also a prevention device that is welcomed by
inspectors. The Green Drain solution is an essential tool for any food manufacturing plant, providing yet another level of
security against possible outbreaks. It is brilliant!
Easily installed and removed for cleaning in particular when we conduct deep sanitisation. The fact that it maintains an
airtight seal is a huge advantage. We will continue to install the Green Drain as part of our safety protocol in our future
projects. Happy to tell my colleagues and any other manufacturer about your winning solution.
Thanks again,

Danny Ciampini | General Manager | Mondo Doro
Insect Management and Facility Hygiene – Feedback
Reviewed in the United States on June 14, 2024

At Greengate, we pride ourselves on providing our residents with a boutique style of living and personal care. Our attention to detail and individual care is key to our services and client experience. At our Maroubra site – St. Brigid’s Green – our drain fly problem was becoming an issue for residents and staff alike, which I can safely say that it is behind us now.

Our fly infestation around our serving and dining areas seemed to be getting worse, spreading to a number of floors. Our hygiene company Medclean suggested we install Green Drains to seal their breeding grounds. We decided to attack the problem from all angles and combined a wholistic solution between our Pest Management and Hygiene and Green Drains.

Eddie initially came out to meet with our facility manager and conducted a site audit to evaluate our challenges. The service was very comprehensive and put together a complete drain maintenance solution plan to proactively protect our problem areas.

I can report that since the installation of Green Drains, we do not get any complaints or experience the challenges we once had, even though the warmer season is upon us. In some areas we could at times smell undesirable drain odours, this has also been addressed and without using harmful chemicals. Even our resident Chef loves it.

I would highly recommend the Green Drain to any age care facility wishing to be proactive in protecting their residents and staff from the potential health risks of unsealed drains.

Warmest regards,

Jesse Morgan – Village Manager | St. Brigid’s Green
Great success with the Green Drain product!!
Reviewed in the United States on June 14, 2024

Looking after one of Australia’s premier hospitals, the Northern Beaches Hospital (NBH) can be very challenging. With a 488-bed facility, there is always something going on. NBH services residents across Sydney’s Northern beaches and is still regarded as being new and world class. It is vital to keep the facility safe, clean and operational at all times.

We recently had a drain fly infiltration problem within our utilities, kitchens and service areas and tried to manage it by traditional pest control maintenance. This seemed to work ok initially, then the problem would return, and it appeared to be spreading to different sections. Certain areas also had drain smells from time to time.

We first heard about your product a while ago but didn’t feel it was essential or as a matter of urgency to implement a drain protection device. The problem was becoming worse with multiple complaints and affected areas.

We can report that since we decided to install the Green Drains, we do not get any more complaints about pests nor drain odors from the catering department. It provides me peace of mind knowing we have a preventative solution working for us as an essential tool for our facilities.

I would gladly recommend Green Drains to any colleague or anyone in the healthcare industry.

Kind Regards,

Matthew Wagg Mechanical Supervisor | Health NBH

“The Green Drain™ was very easy to install and has stopped all of the bad smells from coming up from the drain. We love it!”

Linda Anderson
Satisfied Customer

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