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Old 03-15-2012, 12:22 AM   #1
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dripping temperature and pressure release valve


Why is my t&p dripping? Its dripping ever so slowly but the drain pan is full...

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Old 03-15-2012, 12:46 AM   #2
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dripping temperature and pressure release valve


Could be that something is stuck in the seat (hold open for approx 5 secs, should dislodge the debris), it could have failed (time to replace), or the temp or pressure of the HWH is too high.

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Old 03-15-2012, 01:06 AM   #3
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dripping temperature and pressure release valve


What would cause the pressure to be too high? Also its like one drop every 10-20 seconds, maybe longer...
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Old 03-15-2012, 11:48 PM   #4
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dripping temperature and pressure release valve


High pressure could mean that your PRV, pressure reducing valve, is failing. Looks like this,
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Old 03-16-2012, 12:04 AM   #5
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dripping temperature and pressure release valve


Simple to check if your temp. is to high and causiing it, just run the water over a thermomator.
It should be no higher then 120 deg.
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Old 03-16-2012, 01:04 AM   #6
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dripping temperature and pressure release valve


Quote:
Originally Posted by VIPlumber
High pressure could mean that your PRV, pressure reducing valve, is failing. Looks like this,
I have never in my plumbing life seen one of those. I thought the pressure was regulated at the meter just like gas...
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Old 03-16-2012, 01:06 AM   #7
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dripping temperature and pressure release valve


Im gonna replace the valve tomorrow and we will see, we didnt install any backflow on the addition so its not an expansion issue.... This is kinda trippin me out
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Old 03-16-2012, 01:11 AM   #8
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dripping temperature and pressure release valve


Are you on city or well water? If your on a well there in no pressure relief valve in most cases.
City water would have one near the meter.
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Old 03-16-2012, 08:57 AM   #9
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dripping temperature and pressure release valve


city water can come into a house from 50PSI up thru 100PSI boiler has to have one or you would be flushing your boiler constantly set typically at 12psi with a lock down nut.does it drip when the boiler is cold/warm in the off cycle..if it does the relief has something on the seat it's not pressure read the guage...when dripping. tagged at 30psi

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