Those valves will rarely get used have a way of fusing together. Maintain the water valves every so often with a qualtiy penetrating oil, and rotate them every so often so they don't stick. You should verify that they hold a valid and if any complaints have been filed against them. If a contractor's license has expired or isn't in good standing, you should choose someone else to do the job. Plumbing requires more skill then just routing water from point A to point B. Plumbers are most frequently called on to repair or clear water lines. A lot of people are afraid that plumbing issues and think that even small problems will ruin their dwelling. This is easily avoided if you know just one thing. Choose which drain cleaners with care. Some drain cleaners contain strong chemicals that will probably damage your pipes. Choose a drain cleaner that claims to be easy on pipes. More information about Bathtub Drain Repair Clute Tx.
You might be tempted to contact a plumber every time you face a small problem, but if you have problems repaired all at once, you can save up money for repairs. Most plumbers have an hourly fee that can be minimized if there is only one trip is cheaper than calling them more than once. Check the overflow holes to make sure there's no clog. Clear overflow holes periodically when you are doing your periodic checks for other problems and things that should be addressed. Always have cold water running when your garbage disposal is running. Cold water helps to maintain the sharpness of the blades sharp and encourage a smoother disposal.