I have a single handle Delta shower faucet (shower only, no tub) that gets hot water for less than a minute and then goes all cold. Someone told me there is a regulator that can be adjusted. I have no idea where it is and how to adjust it.

doug238

is this problem only on the shower? or does it happen to other fixtures? how old is your water heater? is it electric or gas?

sun one

All the other fixtures are fine, my water heater is gas and fairly new, it is set now to 170 degrees.

doug238

i would be severely skeered of 170 degrees in my home. you can become a crispy critter rite quick that way. you also are going to be replacing your t & p soon. and your plumbing ain't gonna like it. many bad dreams in your future.
the first thing i would try is to take the handle off and see if there is a handle limit device. this stops the handle from turning all the way to full hot. this device is a small plastic piece just setting on the stem assembly. it is used as a scald guard to protect children and older people. i strongly suggest readjusting it but not removing it.

sun one

I took off the handle and adjusted the limit device. FINALLY HOT WATER!!!!! Great simple advice. Thank you. T&P?

letmetellu

Doug.....sun one ask you what a T&P valve is in the post above, I am not sure you saw it. .

doug238

tom and the others have given much advice about t & p valves. it is the brass thingy that has the third pipe connecting to the water heater. it is heat [temperature] and pressure [pressure] sensitive. by having the temp at 170 you have softened the spring and if so it is much more sensitive and prone to failure.

sun one

O.K. Now that we have figured out the first problem, where is this little spring and how do I change it? You guys have been excellent help so far.

letmetellu

Keep going Doug....you are doing good....hahahaha

iamgrowler

170 Degrees?

Yikes!!!

The T&P valve has no user servicable parts, so replace it and lower the temperature to 120 degrees before you come home to a swimming pool.