What fitting are not conidred to be concealed fitting?

Concealed fittings are typically those that are hidden from view within walls or structures, such as concealed valves or hidden Plumbing connections. Fittings that are not considered concealed include exposed fittings like taps, hoses, and visible connectors that are easily accessible and visible. Additionally, surface-mounted fixtures, such as wall-mounted faucets and visible pipework, are also not classified as concealed fittings.