How do I remove the valve stem from a kitchen sink?
Turn off the water supply for the faucet where you are removing the stem. Check underneath the faucet for a shut-off valve. They usually have round or oval knobs. Rotate the knob clockwise until it stops to cut off the water supply.Remove the faucet handle, if present. Use the edge of a flat-bladed screwdriver or knife to pop off the faucet screw cap, which is usually concealed as the "Hot" or "Cold" label. Remove the faucet screw with a Phillips screwdriver and lift the faucet off the tap. Other faucet handles may be held in place with a hex screw on the underside which should be unscrewed with a hex screwdriver. The handle can then be pulled off.