To prevent valves from becoming stuck, turn them off and then back on at least once or twice per year.
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Open a can of spray lubricant and spray it around the base of the water valve. Spray until the valve is completely saturated.
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Allow the lubricant solution to sit on the water valve for approximately 10 to 15 minutes to dissolve the calcium and minerals.
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Place a wrench around the face plate of the water valve and place your other hand on the water valve itself.
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Turn the wrench one to two degrees counterclockwise until the faceplate starts to move.
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Remove the wrench and turn the water valve. The valve should move freely.
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Wipe away excess lubricant from the valve and surrounding area with a cloth.