Section
2.5" Waterless Trap Seal
Fits 2.5" (DN65) drain outlets, common in Australian plumbing systems. Drop-in install, no tools required.
How it works.
Green Drain is a one-way valve for your floor 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 2.5-inch drains, 63 to 65 mm, 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 floor drain body.
Drop in the GD25
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. A full commercial floor in an afternoon.
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 | GD25 |
| Pipe Size | 2.5" (63-65 mm) / DN65 |
| Height | ~35 mm |
| Housing Material | ABS Plastic |
| Valve Material | Silicone Rubber |
| Seal Material | Silicone Gasket |
| Flow Rate | 72.50 L/min |
| WaterMark License | WM-022837 |
| Primary Market | International (Australia / APAC) |
| Patents | Multiple US & international patents |
Industries we serve.
The 2.5" (DN65) size is specific to Australian plumbing standards.
Certifications and compliance.
WaterMark Australia
WM-022837
ASSE 1072-2020 Standard
Barrier-type trap seal performance standardEvaluated under IAPMO R&T cUPC File No. 9301
HACCP International
Food Safe endorsement (RG-04)
NSF/ANSI 2
Food Equipment Certified
SGS Aerosol-Retention Test
Retained over 99.9% of an aerosolized MS2 bacteriophage viral surrogate
DTI Test Report
Danish Technological Institute, Report 957187
Interested in this product?
Contact our team for international orders and distributor inquiries.