Why Fill Level Matters: The Hidden Safety Risk in Flexitank Transport

Fill level is the most overlooked safety factor in flexitank transport.The Container Owners Association (COA) recommends filling flexitanks between 97% and 103%. Outside that range, the liquid surge inside the container becomes a real risk — under braking, cornering, and emergency stops.We put it to the test:▫️ 103% fill — stable under normal driving, but noticeable slosh under hard braking▫️ 100% fill — the optimal balance, minimal movement▫️ 95% fill — excessive surge, internal product shift, potential damage to the flexitank liningThe result? Under-filling doesn’t “save space” — it creates a rolling liquid hazard that can damage your cargo, your container, and your carrier’s reputation.At Henan Zonghai Plastics, we manufacture food-grade and industrial flexitanks designed to perform within the COA-recommended range, with consistent wall thickness, reliable valves, and rigorous factory testing.If you’re sourcing flexitanks for the next shipping season, let’s talk.WhatsApp: +86 131 9353 6261Web: www.zonghaiflexitank.comEmail: gaowei@flexitank.com