Regulators can sometimes malfunction and create what is known as a free flow, where gas continues to flow uncontrollably. This usually happens due to poor maintenance or the effects of cold water. To prevent this, it is essential to have regulators serviced regularly and use cold-water rated models when needed. If a free flow occurs, divers should stay calm, breathe carefully from the regulator, and consider using a backup air source. It’s important to know how to handle a free flow situation and have strategies in place for safety.