Your toilet shutoff valve (located on the wall behind your toilet) can leak simply from being turned too far to the left, i.e., counterclockwise. So, if yours is leaking, try turning the valve in the other direction to see if that solves the problem.
If not, you’ll be glad to know that repairing the valve is a fairly simple procedure, one that starts with shutting off the water supply to your entire house and draining the pipes up to the location of the shutoff valve. Let’s start from there:
Grab a pan or small tub
After turning the shut-off valve to the full “off” position (all the way to the right), detach the steel hose. But first, place a small tub or pan on the floor to catch any water that might still be present.
Untwist the nut
Next, dis-assemble the valve, remove the screw from the handle and untwist the packing nut. Remove the threaded valve system. In the process, remember the position of the neoprene washers for ease of re-assembly.
Clean the washers
Clean the washers with a rag to remove any mineral deposits. Keep cleaning until their flexibility returns.
Re-assemble the Valve
Make sure the washers are positioned properly, and then tighten the packing nut a little at time with your wrench or pliers. Do not use plumber’s putty or you might have a hard time fixing the shut-off valve in the future. Also, be sure not to over-tighten the nuts as that could damage the valve.
Re-attach the hose
Re-attach the steel hose to the valve assembly.
Turn the Water Supply Back On
First, re-engage your main water supply and then do the same with your toilet relief valve. If the valve is still leaking, it needs to be replaced, but at least you gave it a heckuva try.
Or, maybe this DIY plumbing stuff just isn’t for you. If that’s the case, one call to Connor Plumbing is all it takes for any plumbing repair or replacement job, including toilet relief valves.