During a hotel stay in NYC over the weekend I noticed the combination standpipe included a 3" pressure reducing valve just upstream of the 3" zone control assembly.
An indicating valve was not installed on the inlet side of the Cla-Val (model 90G-21 with no pressure gauges). A filler piece between the PRV outlet and the butterfly valve included a pressure gauge which was at 60 psi. The 2-1/2" fire hose valve was standard pressure and the express drain was only 2".
This arrangement is not something I would expect to see in the DC metro area, but is it typical of NYC?
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PE PREP SERIES