Water pump located on the ground floor of our 10 story building is leaking and therefore it is constantly running and spilling water into the parking lot. Therefore, a plumber shut the water pump off and opened a bypass valve.After we shut off water pump all units still have good water pressure so why do we need to replace water pump?When water pump is on the incoming city water gauge reads 60psi and the gauge measuring the water shooting up into the building reads 80psi. Now both gauges read zero.How can water coming from the city at 60psi travel all the way to the 10th floor without a boost? I do not understand what is happening.
Neglecting friction losses: means = MassFlowRate * g * h turn cubic meters of water into kilograms. pass fee is already in seconds. sparkling up for h (would be meters), divide via the 4 meters / floor.
Perhaps the water tank/supply is higher than 10 stories high.
It will be less pressure on 10th floor for sure. If everyone is showering or using water on 2 and 3, 10 wont have any pressure. Its probably time to replace gauges and fix the pump. May just need a seal and impeller adjustment. It also sounds like you need or need to replace the pressure switch that is supposed to only turn pump on when demand is high. Check it out. Run ad on craigslist for a pump man to check it out. If you need to replace pump go with an ANSI pump. All parts are interchangeable.
the pump may have been required before the city up graded their water system. and now it may not be required. but if it were me ? i would replace the pump . Then continue to use the bypass. the reason is , because one day for various reasons the public water pressure could suddenly drop. And then you will and emergency. or at least buy the pump and store it .. So if this ever happens you just need to pay to have it installed. This way you are prepared for what will prob happen someday. but 10 stories ! i am with you . i would think you need a pump to do that.
