I have a tanked hot water heater, 13 years old, that I am thinking is reaching the end of it's useful life, but wanted to get some expert opinion before replacing.
Current problem we are seeing
Hot water is venting via a wilkins 1500 valve (graduated screw in type) from the hot water side of the tank, to a pvc pipe and then to outside. It's been doing this for a number of weeks. Currently the wilkins valve is set to 125.
Note that this wilkins is inline with the hot water pipe exiting the tank and is separate from the TPR valve on the side of the tank. I don't know why I have this extra valve. I operated the TPR valve and it is working; vents when I pull it and stops when I release it.
Anyways, since the wilkins is set to 125, is that a high or low pressure for hot water or do I have room to play to alter it to stop this venting? (perhaps dangerous given it's a safety valve).
And what does this venting and the 125 value say about the health of the hot water heater?
Note that we don't have any complaints about the temperature or pressure of hot water into the house.
hot water heater details
50 gallon, tanked
model : PR6 5C NPRT971
State Industries Inc, Ashland City, TN
Original water heater install on new home 1999.