pressure reducing valve

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Old 06-27-03, 08:51 PM
bodean4
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pressure reducing valve

How do I determine what size prv I need? I have a 1" pvc main water line that reduces to 3/4" as it enters the house. Incoming water pressure is 100 psi. I would like to reduce that to 50 psi. Will a 3/4" prv be ok? Is there some formula I need to use to determine what size I need? Also should I install the shutoff valve before or after the prv?
 
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Old 06-27-03, 08:54 PM
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If you have a basement and you can install a PRV valve there, 3/4" prv will work, if no basement, then 1" prv valve on the line after the water meter, if no shut off at water meter, then yes install a shut off before the prv valve at that time.
 
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