The commercial workhorse. SGS tested to block >99.9% of pathogen aerosols. The most commonly specified model for healthcare, food service, and institutional projects.
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Four flexible silicone sealing ribs form a one-way valve. Water and debris pass through under gravity. Commercial wash-down volumes, mop water, and kitchen runoff all drain normally.
When flow stops, the ribs close to create a continuous mechanical seal that blocks sewer gas, odors, and pests from entering the occupied space above.
The flexible design accommodates pipe diameters from 75 to 85 mm. Drop-in installation with no tools required.
The GD3 was the test model for SGS laboratory testing that demonstrated greater than 99.9% blockage of aerosolized bacteriophage Phi-X174, a validated viral surrogate.
| Model | GD3 |
| Pipe Size | 3" (75-85 mm) / DN80 |
| Height | 51 mm |
| Housing Diameter (no gasket) | 61.49 mm (2.421"), bottom 66.68 mm (2.625") |
| Housing with Gasket | 82.76 mm (3.258") wide x 50.5 mm (1.988") |
| Housing Material | ABS Plastic |
| Valve Material | Silicone Rubber |
| Seal Material | Silicone Gasket |
| Flow Rate (Level C) | 10.74 GPM |
| Flow Rate (Level U) | 105.70 L/min |
| Flow Capacity (DTI) | 128.7 L/min (1.5 L/s) |
| Pressure Resistance (DTI) | 660 Pa |
| SGS Pathogen Test | >99.9% blockage of aerosolized bacteriophage Phi-X174 |
| WaterMark License | WM-022837 (DN80) |
| Patents | US 7,900,288 · US 9,027,172 |
Lift the existing drain grate or strainer from the floor drain body.
Place the Green Drain into the drain body or hub opening.
The silicone gasket creates a snug seal against the pipe walls.
Put the grate back. Done. A full commercial floor in an afternoon.
Handy accessories for Green Drain owners.
Purpose-built for quick, clean removal of any Green Drain. Simply hook and lift.
$6.95
Identify drain sizes in the field. Measure the inside diameter to find the right model.
$6.95
The 3" floor drain is the commercial workhorse. The GD3 is the most commonly specified model for healthcare, food service, and institutional projects.
IAPMO File 9301
Trap seal performance standard
European Technical Assessment
Food Equipment Certified
Certificate RG-04
WM-022837 (DN80)
California Material Safety
>99.9% blockage of viral aerosols
Rapport 957187
Certified Testing Lab
Danish Plumbing Approval
"After installing your product in all our floor drains, we could see a noticeable difference in the reduction of fruit fly and mosquito activity. We were also very impressed that the flow rate of our trough drain remained consistent."
"I am impressed with the simplistic design and the quality of the materials of construction. Just with the pest issue resolved alone we are sold."
Drop-in install. No tools. Works from day one.
