Q. What is the difference between an angle cock and a stop valve?

Answer

The angle cock is also sometimes referred to as the stop valve. While stop valves are valves that entirely stop the flow of the liquid inside the pipe, angle cock are used to provide water to fittings outside the wall at a certain flow. Angle valves can also be termed as the regulating device in residential plumbing and industry where there is an oval knob or twist handle to regulate the flow of water being provided to a fitting, like the health faucet, geyser, cistern, etc.