Can a plumber install an angle stop valve?

Can a plumber install an angle stop valve, yes, plumbers regularly install angle stop valves as part of routine service, and it is one of most common small jobs they perform. Angle stop valve is small shutoff valve located under sinks, behind toilets, and near appliances like dishwasher and washing machine that controls water supply to individual fixture, allowing you to shut off water to that fixture without shutting off whole house. Plumbers install new angle stops during new construction, bathroom or kitchen remodels, when replacing old leaky or seized valves, or when upgrading from old multi turn gate style to modern quarter turn ball type angle stops that provide more reliable shutoff. Installation involves shutting off main water, draining line, removing old valve, and installing new valve with compression, threaded, soldered, or push fit connection depending on pipe material, which plumbers can do quickly, typically 30 to 60 minutes per valve. Plumbers can also install angle stops in tight spaces and ensure leak free connections. Cost to have plumber install angle stop is usually $150 to $250 per valve including parts and labor, which is reasonable for professional installation that prevents future leaks. So yes, plumber can and frequently does install angle stop valves.