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Monday, July 5th 2010, 9:16am

PVB sizing

My supply to my sprinkler system is 3/4"...what size PVB should I install 1" or 3/4" there any advantage to 1"...also, should I sweat it in, or install a PVB with unons?


Supreme Member

Posts: 4,530

Location: Metro NYC


Monday, July 5th 2010, 12:04pm

no advantage in upsizing the PVB, since they are flow-rated like water meters are, and capable of handling flows way beyond what your sprinkler system would use


Unions are rarely used when installing PVBs

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