Circle William fittings are coated on which system?

Circle William fittings are designed for use in the ventilation system, specifically for managing the flow of air and gases within various environments. They are often utilized to maintain appropriate air quality and circulation aboard ships or in industrial facilities. The coating on these fittings is important for protecting them against various environmental factors and ensuring they function efficiently within the ventilation system.

In the context of the other systems listed, while chemical systems, electrical systems, and water supply systems have their own sets of fittings and components, Circle William fittings are specifically tailored for air and gas management. Their coating serves to enhance durability and effective performance in ventilation applications, which underlines their vital role in ensuring optimal system operation and safety.