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How To Repair A Electric Ball Valve 2011-12-28

A ball valve contains a round ball valve that rotates over a set of holes inside the ball valve head, allowing hot and cold water to flow into the spout. This ball valve is used in kitchens and bathrooms. When the bathroom Trunnion Mounted Ball Valve fails or leaks, it is time to replace the entire ball valve assembly. This is a simple project for any homeowner, no matter how much experience he has.

1 Turn off the water supply. It is important to not only turn of the water supply, but also to ensure no water remains in the line. Locate the hot and cold valves under the sink and turn counterclockwise to shut them off. Turn the ball valve on and run it until the lines are clear.

2 Pry off the ball valve handle's cover plate with a flat-head screwdriver. Then use an Allen wrench to remove the set screw securing the handle and pull the handle away from the ball valve body.

3 Remove the ball valve cap and cam packing. The ball valve cap is a chrome piece that covers and protects the inside parts. To remove, loosen the white plastic adjusting ring by placing a flat-head screwdriver in one of the four notches and tapping in a counterclockwise direction. Then, unscrew the ball valve cap. If the cap will not budge, use a jar opener to provide extra gripping power. Lift off the white plastic cam-packing piece to expose the Electric Ball Valve. Clean any hard water deposits from the piece by wiping it with a soft cloth dipped in a little lime scale remover.

4 Remove and replace the ball valve and seal/spring combinations. Grasp the ball valve stem and lift up. Inspect the underside of the ball for signs of wear. Signs you need to replace the ball include wearing of the metal around the holes, scratches, or a brass color appearing from underneath the metal plating. Remove and replace seals and springs. Use a flat-head screwdriver to pry out the three spring/seal combinations and discard. Slide a spring onto the open end of each rubber seal and then reinsert in the ball valve body, using your finger to push them into place.

5 Reassemble the ball valve. Replace parts in this order: the new Forged Steel Ball Valve, cam-packing piece, ball valve cap, handle, and cover plate. Turn the water back on and test the ball valve for leaks. If leaking occurs, remove the ball valve handle and tighten the adjusting ring.

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