Contamination risks in wineries often begin in the wash floor. Fruit flies carry Brettanomyces — one of the worst wine spoilages. Breweries face the same problem with lactic bacteria. Green Drain™ breaks the breeding cycle in the P-trap.
The wine harvest lasts 4–6 weeks. During harvest the cellar is thoroughly cleaned; everything is flushed through. For the rest of the year it sees minimal use. The P-traps are drained in the off-season.
Top Croatian wine regions: Plešivica, Pelješac, Istria, the Central Dalmatian islands, Kutjevo, Hercegovina, and the neighboring Vipava and Goriška Brda. Plus a growing craft beer scene (Garden Brewery, Zmajska, San Servolo, Brlog, and others).
Statistical data were taken from official sources: State Statistical Office (data.dzs.hr) Croatian Institute of Public Health (hzjz.hr), Ministry of Labor, Pension System, Family and Social Policy (mrosp.gov.hr), Agency for Science and Higher Education (azvo.hr), Ministry of Tourism and Sports (mint.gov.hr). Regulatory framework: EUR-Lex for EU directives and regulations — EU 2017/745 (MDR), EU 178/2002 (food safety), EU 1935/2004 and EU 10/2011 (food contact materials), EU 528/2012 (BPR), EU 2014/34 (ATEX). Standards: EN 1253-1 (floor P-traps, water seal ≥50 mm), EN 1253 Parts 6/7/8 (mechanical seal failures, 2023), HACCP Internacional RG-04, ASSE 1072-2020, NSF/ANSI 2. Tourism data taken from the DZS publication for H1 2025, healthcare data from the HZJZ report 2024, data for education from DZS publications for the 2023/2024 and 2024/2025 school years, data for nursing homes from the MROSP report, and announcements of EU-funded construction in 2025. Revision date: May 2026.
November and December — harvest is over, before the winter cellar cleaning. The entire cellar of a small to medium winery is installed in one day.
Harvest is finished — let's map out all the drains in the cellar, transfer room, and filling room.
Typically: GD 3 in the basement, GD 4 in the slots under the tanks, GD 2 in the laboratory.
Sondes in 4 drains for 14 days before winter washing.
One day of work — before Christmas, before the winter standby period.
Traditional wineries (Plešivica, Pelješac, Istria) have a mix of DN65 to DN125, depending on the age of the facility. Modern craft breweries build to DIN standards (DN80–100). Main risks: Brettanomyces in biofilm, fruit flies, and CO₂ accumulation in poorly ventilated cellars.
Green Drain™ doesn't work alone — for maximum drain control it's combined with GD Uri-Tabs™ (urinals) and GreenSwirl™ (cleaning).
Patented silicone seal for drains in basements, transfer rooms, and loading docks. CO₂ barrier in enclosed spaces, worker protection.
Bio-enzyme urinal tablets for workers' restroom facilities. No effect on fermentation or product taste.
Bio-cleaning of drains in production. Breakdown of yeast and organic deposits without harsh chemicals that could compromise flavor.
We come to the site, map the drains, and provide a written recommendation—no cost, no obligation.