What are the disadvantages of using angle valves?

What are the disadvantages of using angle valves include several limitations compared to straight stop valves or ball valves in certain configurations, though angle valves are very useful for tight spaces. One disadvantage is they create more pressure drop than straight valve because they turn flow 90 degrees, which causes turbulence and reduces flow slightly, though for fixture shutoff this is minimal. Angle valves are more prone to water hammer in some installations due to directional change. Another disadvantage is limited flow capacity, as angle stops typically have small orifice designed for faucet supply, not for high flow applications. Cheap angle valves, especially multi turn compression type, are prone to leaking at stem packing, seizing when not operated regularly, and failing to fully shut off due to worn washers or mineral buildup. They can be difficult to access if installed behind cabinet in tight space, making operation awkward. Angle valves with plastic internals may crack over time. If overtightened, compression ferrule can damage pipe. Additionally, angle valve is not suitable for throttling, only fully open or closed, and using it partially open causes wear. Compared to straight ball valve for main line, angle valve has smaller port and more pressure loss, so not ideal for main shutoff. Despite disadvantages, quarter turn brass angle valve remains best choice for fixture shutoff when quality brand is used.