The most common commercial floor drain size. ≥340 L/min flow capacity. Drop-in install, no tools required.
Inc. GST. Free shipping on orders over $100 AUD. $10 flat rate standard shipping.
Four flexible silicone sealing ribs form a one-way valve. Water passes through under gravity. Even high-volume wash-down flows move through without restriction.
When flow stops, the ribs close to create a continuous mechanical seal that blocks sewer gas, odours, and pests from entering the occupied space above.
The valve opens under the weight of just 32 grams, approximately 4 oz of water. The flexible design accommodates pipe diameters from 102 to 110 mm.
Independently tested by IAPMO R&T. These are lab-verified results from an accredited third-party testing laboratory.
| Model | GD4 |
| Pipe Size | 4" (102-110 mm) / DN100 |
| Height | 51 mm |
| Housing Diameter (no gasket) | 88.39 mm (3.480"), bottom 93.47 mm (3.680") |
| Housing with Gasket | 108.56 mm (3.274") wide x 50.7 mm (1.996") |
| Housing Material | ABS Plastic |
| Valve Material | Silicone Rubber |
| Seal Material | Silicone Gasket |
| Flow Rate | ≥340.00 L/min |
| ASSE 1072 Opening Force | 32 grams |
| ASSE 1072 Cycle Life | >2,500 cycles |
| ASSE 1072 Evaporation Reduction | >96% |
| Pressure Resistance (DTI) | >400 Pa |
| WaterMark License | WM-022837 (DN100) |
| Patents | Multiple US & international patents |
Lift the existing drain grate or strainer from the floor drain body.
Place the Green Drain into the drain body or hub opening.
Recess 2 to 4 inches below the pipe top. The silicone gasket creates a snug seal against the pipe walls.
Put the grate back. Done. A full commercial floor in an afternoon.
The 4" floor drain is the most commonly specified drain size in new commercial construction. The GD4 appears in virtually every commercial vertical.
WM-022837 (DN100)
Trap seal performance standard
Food Equipment Certified
Certificate RG-04
European Technical Assessment
>99.9% blockage of viral aerosols
Rapport 957187
Certified Testing Lab
Drop-in install. No tools. Works from day one.
