Section
1.5" Waterless Trap Seal
Fits 1.5" (DN40) drain outlets. Drop-in install, no tools required.
Green Drain recommends replacing the seal every 6 months in high-use drains, every 12 months in low-use drains. Per-day pricing reflects this cycle.
How it works.
Green Drain is a one-way valve for your drain. Water flows down and out. Nothing comes back up.
Inside sits a soft silicone valve. Running water pushes it open; the moment the water stops, it closes and seals tight against sewer gas, odors, and pests. Because it seals with silicone instead of water, it never dries out the way an ordinary trap can, even when the drain goes weeks without use.
It fits 1.5-inch drains and drops in by hand. No tools, no plumber, installed in seconds.
Installs in 30 seconds. No tools.
Remove the drain grate
Lift the existing drain grate or strainer from the drain body.
Drop in the GD15
Place the Green Drain into the drain body or hub opening.
Press gently to seat
Recess 2 to 4 inches below the pipe top. The silicone gasket creates a snug seal against the pipe walls.
Replace the grate
Put the grate back. Done. Fully sealed in under a minute.
Specify Green Drain in your next project.
Download the Revit family set for every Green Drain model, and find us listed in BSD SpecLink and MasterSpec.
Technical Specifications
| Model | GD15 |
| Pipe Size | 1.5" (38 mm) / DN40 |
| Height | 28 mm |
| Housing Diameter (no gasket) | 36.46 mm (1.435") |
| Housing with Gasket | 48.77 mm (1.920") wide x 30.18 mm (1.188") |
| Housing Material | ABS Plastic |
| Valve Material | Silicone Rubber |
| Seal Material | Silicone Gasket |
| Flow Rate | 51.55 L/min |
| WaterMark License | WM-022837 (DN40) |
| Patents | Multiple US & international patents |
Industries we serve.
The GD15 fits anywhere a 1.5" (DN40) drain connection is present.
Certifications and compliance.
Green Drain holds five product certifications (cUPC, WaterMark, NSF/ANSI 2, CE / ETA-18/0536, and Saber). The remaining items below are independent test reports, endorsements, and compliance declarations that support those listings.
cUPC Listed
IAPMO File 9301
ASSE 1072-2020 Standard
Barrier-type trap seal performance standardEvaluated under IAPMO R&T cUPC File No. 9301
CE / ETA-18/0536
European Technical Assessment
NSF/ANSI 2
Food Equipment Certified
HACCP International
Food safety endorsement — Certificate RG-04
WaterMark Australia
WM-022837 (DN40)
Prop 65 Compliant
Compliance declaration — California material safety
SGS Aerosol-Retention Test
Test report — retained over 99.9% of an aerosolized MS2 bacteriophage viral surrogate
DTI Tested
Independent test report — Rapport 957187
IAPMO R&T
Certifying body — issues the cUPC listing (File 9301)
VA Godkendelse
Danish plumbing approval (declaration)
Ready to protect your drains?
Drop-in install. No tools. Works from day one.