What is the difference between plumbing appliance and plumbing appurtenance?

From the 2012 International Plumbing Code

PLUMBING APPLIANCE. Water-connected or drain-connected devices intended to perform a special function. These devices have their operation or control dependent on one or more energized components, such as motors, controls, or heating elements. Such devices are manually adjusted or controlled by the owner or operator, or are operated automatically through one or more of the following actions: a time cycle, a temperature range, a pressure range, a measured volume or weight.

PLUMBING APPURTENANCE. A manufactured device, prefabricated assembly or an on-the-job assembly of component parts that is an adjunct to the basic piping system and plumbing fixtures. An appurtenance demands no additional water supply and does not add any discharge load to a fixture or to the drainage system.

PLUMBING FIXTURE. A receptacle or device that is connected to a water supply system or discharges to a drainage system or both. Such receptacles or devices require a supply of water; or discharge liquid waste or liquid-borne
solid waste; or require a supply of water and discharge waste to a drainage system.

Can I ask for the physical examples?

Is this a test?

PLUMBING APPLIANCE - Water heater, washing machine, dishwasher.
Plumbing appurtenance - Water meter, pressure reducing valve, backflow preventer.



Edited 1 times.