What type of fittings must all equipment be equipped with?

The correct answer is that all equipment must be equipped with low loss fittings. Low loss fittings are specifically designed to minimize refrigerant loss during service and maintenance processes. They help ensure a more efficient and environmentally friendly handling of refrigerants, which is crucial given the focus on minimizing emissions and protecting the ozone layer as governed by EPA regulations.

Low loss fittings are designed to decrease the amount of refrigerant that escapes during connections and disconnections. This is essential for maintaining system efficiency and preventing harm to the environment from refrigerant leakage. By using low loss fittings, technicians can complete their work more effectively, ensuring that refrigerants remain contained and that the system operates optimally.

Other types of fittings, while they may serve various purposes, do not focus on reducing refrigerant loss in the same vein as low loss fittings. For example, standard fittings may not have the leak-prevention designs of low loss fittings, and therefore could result in increased refrigerant loss. High pressure fittings are more focused on withstanding higher pressures rather than minimizing loss, and universal fittings generally imply a broader adaptability but do not necessarily address the specific concerns of refrigerant loss during servicing.