How a passive silicone seal keeps sewer gases, pathogens, odours and pests out of a building. From a 60-second fitting demo to how it is used in hospitals and restaurants.
The whole job, start to finish. No plumber, no adhesive, no pipework. The only tool you might need is a screwdriver for the grate screws. Fitting itself takes under 60 seconds.
The video shows a GD-2 (2″ model) going into a standard shower waste, but the procedure is the same for every size in the range. Unscrew the grate, drop the Green Drain into the pipe, put the grate back. The one-way silicone valve seats itself.
Designed for both new build and retrofit, the seal drops into any existing drain body with no change to the pipework. A maintenance team can fit hundreds of units in a building in a single day. Once in, the seal holds back sewer gases, odours, pathogens and pests while water drains through it normally.
The one-way silicone valve puts a physical barrier in the path pathogens take through drain pipework. Independent SGS testing measured more than 99.9 % blocking of viral aerosols.
Studies show that droplets thrown up as water runs away can carry organisms from drain biofilm 30–50 cm above floor level. A passive seal closes that route physically — no chemicals, no sterilising, no moving parts. Note that most of this literature concerns sink and basin traps rather than floor gullies.
Healthcare solutionsFloor gullies in professional kitchens are the usual way in for drain flies, cockroaches and sewer odours. See how the seal stops pests and smells at source while still taking full flow during a wash-down or CIP cycle.
Pest treatments keep repeating because the chemistry kills adults but never reaches the eggs in the trap biofilm. A passive seal closes the route out — the population breaks within one life cycle, 7 to 21 days. It is a Tier 1 mechanical measure under IPM and needs no biocide registration.
Restaurant solutionsFour things come into a building through an unprotected floor drain: sewer gases (H₂S, methane, ammonia), odours, pathogens and pests. The one-way valve holds back all four at once while water still runs away normally.
Hydrogen sulphide (the rotten-egg smell), methane and ammonia seep into empty rooms and washrooms for days on end. Carpets, bedding and curtains hold onto it. A passive seal in the trap removes the route — blocked physically, with no chemicals, no water and no maintenance.
How it all worksA free technical audit with samples to test for seven days. No cost, no obligation to buy.