so i was at an apartment complex this morning on a call for low water pressure. last night the owner called the city as some of the tenants were complaining about low pressure. they go out and read 55# at the main before the 1.5'' regulator.
i show up this morning and read 18# before and after the regulator. i check at a couple buildings next door and they have no regulators and 55#.
i check the meter and all looks good. call the city water dept. and they they try explaining water pressure, volume and static pressure to me over the phone of course they come out to the job in 20 minutes and their 1 and only pressure gauge on the truck is broken. so i let them use mine. they were stumped.
they were going to pull the meter from the box, until i suggested that it might just be a false reading at the high pressure hose bibb with vacuum breaker. so i wrench off the added on vacuum breaker and get 55#.
so the real question is how does a hose bibb with an screwed on vacuum breaker cause much lower reading on my pressure gauge under static conditions i already knew it was a bad and unnecessary regulator.
stumped or confused maybe a few pictures will help?
18# with vac. breaker at high side of regulator.
55# with vac. breaker removed. sitting on top of gauge.
screw on vac. breaker.
1.5'' wilkins 600 with rusted out spring. that's why no pressure to the building.
all fixed as seen by the 55# at building.
replaced the hose bibb with the newer style with integeral vacuum breaker. they actually flow more gpm than a standard hose bibb.