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Thread: can you do this???
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12-02-2008, 04:04 PM #1
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12-02-2008, 04:16 PM #2
Re: can you do this???
You "can" but you shouldn't.
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12-02-2008, 04:27 PM #3
Re: can you do this???
Everything be everything. like a box of chocolate just never known what you will get !!!
Best
Ron
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12-02-2008, 04:35 PM #4
Re: can you do this???
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.
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12-02-2008, 04:41 PM #5
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12-02-2008, 05:49 PM #6
Re: can you do this???
The probe must be in the top 6 inches of the tank.
Review this document.
wattsPDF
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12-02-2008, 05:59 PM #7
Re: can you do this???
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.
Notice that is 6" maximum not minimum.
Last edited by Jim Luttrall; 12-02-2008 at 06:05 PM. Reason: Larson already gave better information
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12-02-2008, 07:33 PM #8
Re: can you do this???
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 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?
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12-02-2008, 07:43 PM #9
Re: can you 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.
Last edited by Gunnar Alquist; 12-02-2008 at 09:38 PM. Reason: unable to type and think at the same time.
Department of Redundancy Department
Supreme Emperor of Hyperbole
http://www.FullCircleInspect.com/
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12-03-2008, 07:18 AM #10
Re: can you do this???
Looks like the relief line is too small too!
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12-03-2008, 07:55 AM #11
Re: can you do this???
I like the rust coming out of that nipple.
Dylan Whitehead
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