can you do this???

[Ted Menelly]

I have seen more water heaters than I care to imagine and I imagine I should have seen this before but I have not. Is it alright to do this??

[John Arnold]

You "can" but you shouldn't.

[Ron Bibler]

Everything be everything. like a box of chocolate just never known what you will get !!!

Best

Ron

[Michael Larson]

No, the probe of the TPR must be in the top part of the tank.

They make long ones but I don't think that long.

Without that it will likely only open on pressure and not temp.

[Ted Menelly]

No, the probe of the TPR must be in the top part of the tank.

They make long ones but I don't think that long.

Without that it will likely only open on pressure and not temp.

I was thinking that. It just kina thru me because I cannot remeber seeing one with that set up. I imagine the temp when things go bad cannot be more than a couple degrees off where it is sitting now. I wonder if it would really affect it.

[Michael Larson]

I was thinking that. It just kina thru me because I cannot remeber seeing one with that set up. I imagine the temp when things go bad cannot be more than a couple degrees off where it is sitting now. I wonder if it would really affect it.The probe must be in the top 6 inches of the tank.

Review this document.

wattsPDF (http://www.watts.com/pdf/ES-10L-100XL.pdf)

[Jim Luttrall]

Important Instructions: Relief Valves and Automatic Gas Shut-Off Devices
Combination temperature and pressure relief valves with extension thermostats must be installed so that the temperature-sensing element is immersed in the water within the top 6" (152mm) of the water storage tank. They must be installed either in the hot outlet service line or directly in a tank tapping. Combination temperature and pressure relief valves that do not have extension elements must be mounted directly in a tank tapping located within the top 6" (152mm) of the water storage tank. Valves must be located so as to assure isolation from flue gas heat or other ambient conditions that are not indicative of stored water temperature.

From the Watts sight.

"Alternate" ONLY when the tappings are not provided:
Use standard or extra length extension thermostat which permits the end of the thermostat to extend into the top 6" of the tank.




http://www.watts.com/pro/images/body/support/watersafety_flowcontrol/install2.gif

Notice that is 6" maximum not minimum.

[Jerry Peck]

Yes and no.

Like the others have said, only if it is the long probe type and only if the long probe type allows for that height.

Is suspect it does not.

Watts makes T&P valves with 8" long extension probes, but that only allows for a 6" long nipple (give or take). Watts: 100XL | Temperature and Pressure Relief Valves | Water Safety & Flow Control (http://www.watts.com/pro/_productsFull_tree.asp?catId=64&parCat=294&pid=807&ref=2) That photo looks like it has a 6" nipple with a tee on it, making it probably 8" high, give or take.

Maybe they make longer ones?

[Gunnar Alquist]

I have seen more water heaters than I care to imagine and I imagine I should have seen this before but I have not. Is it alright to do this??

Seems to me that there are a couple of things going on. First of all, the T/P valve should be in its own little fitting. All of the water heaters that I see today already have a T/P valve installed. I do see this type of installation on older water heaters. I usually recommend replacement because the water heater is likely past its useful life.

[Wayne Carlisle]

Looks like the relief line is too small too!

[Dylan Whitehead]

I like the rust coming out of that nipple.