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Old 02-22-2009, 12:46 AM   #1
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in line pressure relief valve


Im installing a in line pressure relief valve-before water heater ,cold side,- that says on end- set at 75psi.Is it preset or do i need to adjust it?..it has a closed edge and is rigid.
Also if i already have a psi reading of at least 70 or a bit higher ,80 sometimes , will that be in addition to the pressure the new valve holds..in otherwords will it release pressure at 145 or so?..
I also have valve on heater but need something external,besides expansion tank.We just had backflow valve installed by city on all water lines.
Any info is appreciated.
Thanks

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Old 02-22-2009, 05:09 PM   #2
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in line pressure relief valve


Little confused. Are you installing a pressure reducer valve or a t&P. If it is a t&P my question is way.

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Old 02-22-2009, 05:52 PM   #3
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in line pressure relief valve


it is an inline pressure relief valve up to 75psi.not the one built on the side of water heater ,but in the cold line to it...and you cant turn anything on or off in since it its a stand alone one in line.
i will probably be putting a reducing valve on main line also since the pressure spiked at 125-water on/off but stayed around 80 mostly(still a bit high)...
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