ᐅ How much water should or must flow from the main water supply line?
Created on: 30 Jul 2018 10:50
K
KingSong
Hello,
I have a somewhat urgent question. Our screed is scheduled to be poured on Friday. The main water line from the street enters the technical room, connected at the bracket but without a meter yet. Just behind the main shut-off valve, there is a tap installed.
The screed contractor connected the silo mixer to this tap. Both valves are fully open, but not enough water is coming through. The silo mixer requires 2000 liters per hour (530 gallons per hour).
The shut-off valve at the street is fully open. The water utility says the pressure is no more than 3 bar (43.5 psi), but the construction manager believes that even at 3 bar (43.5 psi), the line should easily supply 2000 liters per hour (530 gallons per hour).
How much flow should generally be expected here? The water utility suggests installing a pump to increase the pressure, but if the street supply can’t deliver more water, how would a pump increase the volume?
Currently, work is stalled because there isn’t enough water from the line to run the silo mixer.
Does anyone have any ideas on what we can do?
Thanks in advance, greetz Jörg
I have a somewhat urgent question. Our screed is scheduled to be poured on Friday. The main water line from the street enters the technical room, connected at the bracket but without a meter yet. Just behind the main shut-off valve, there is a tap installed.
The screed contractor connected the silo mixer to this tap. Both valves are fully open, but not enough water is coming through. The silo mixer requires 2000 liters per hour (530 gallons per hour).
The shut-off valve at the street is fully open. The water utility says the pressure is no more than 3 bar (43.5 psi), but the construction manager believes that even at 3 bar (43.5 psi), the line should easily supply 2000 liters per hour (530 gallons per hour).
How much flow should generally be expected here? The water utility suggests installing a pump to increase the pressure, but if the street supply can’t deliver more water, how would a pump increase the volume?
Currently, work is stalled because there isn’t enough water from the line to run the silo mixer.
Does anyone have any ideas on what we can do?
Thanks in advance, greetz Jörg
C
chand198630 Jul 2018 11:10KingSong schrieb:
A tap is installed directly behind the main shut-off valve.
The screed installer connected the silo mixer to this tap, with both valves fully open.A simple safety question: Is there no aerator or any other flow restrictor installed at the tap outlet?
Otherwise, 3 bar (43.5 psi) should definitely be more than enough, unless there is a bottleneck somewhere.
C
Caspar202030 Jul 2018 12:06KingSong schrieb:
Connected to the bracket but without a meter yet. A water tap is installed just after the main shut-off valve.Normally, the water meter goes into the bracket. What is there now? Is the water tap still before the bracket? Could you please take a photo?
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