How to Replace a Toilet Fill Valve

July 20, 2011 at 4:18 pm

A toilet fill valve is the contraption that rests in the water tank of your toilet and it controls how much water remains in the tank reservoir and how much water is released into the toilet bowl after you have flushed the toilet. A toilet fill valve is an important part of a working toilet because it controls how much water you use to flush to the toilet and it also manages your water use. When the toilet fill valve breaks, it’s important to replace it with a new on as soon as possible.

How to Replace a Toilet Fill Valve

Prepare the Work Area – First, turn off the water source to the toilet; there should be a pipe from the wall to the lower left corner of the reservoir tank. Close the valve in order to shut off the water. Also, I recommend putting down some towels to catch any spills or leaks. After you’ve turned off the water, flush the toilet in order to drain the water out of the reservoir tank. It’s okay if water is in the toilet bowl; you’re only concerned with minimizing the water in the reservoir tank.

toilet fill valve How to Replace a Toilet Fill Valve

Remove the Old Fill Valve – In order to do this, you’ll need to disconnect several control points. First, disconnect the hose from the bottom of the reservoir tank; you should simply have to loosen a nut at the base of the hose. Some leftover water might spill at this point, so be sure to have a towel ready. Disconnect the small rubber hose that leads to the overflow tube. Then lift out the old fill valve.

Install the New Fill Valve – I recommend cleaning the tank with a rag before installing the new fill valve; you might as well clean up while you are there to prevent future clogs. Next, you’ll have to reconnect the valve stalk at the two control points: the overflow tube (there should be a clip you can use to secure the rubber tube). When you install the valve stalk, make sure to adjust it properly; most new valves will have instructions as to how you can adjust the water level in the reservoir tank. Once that’s done, secure the bottom of the column to the hole in the tank, being sure to install the washer, and then tighten the hose at the base of the tank. Turn on the water, wait for the reservoir to fill up, checking for leaks as it does, and then flush the toilet to make sure the entire flush cycle operates properly.

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