2 ms·

40m doesn't seem at all surprising if you consider the height of a water tower built somewhere with higher elevation than most of the town. My house is 20m lowe

40m doesn't seem at all surprising if you consider the height of a water tower built somewhere with higher elevation than most of the town. My house is 20m lower than the base of either of the two nearest water towers, at least one of which is ~75m tall. A few years ago, the town completed migrating one of the outlying areas with lots of new development into their central pressure zone, resulting in an increase by 45psi in those neighborhoods. Pressure reducing valves are used anywhere the pressure going into a home is above 80 PSI, and those are a lot more common than homes needing their own booster pumps.

kumarvvr 5y ago
Sorry, for got to mention. Most of India does not have direct water connections. Most homes have borewells, storage tanks and intermitten municipal supply. So there is no direct line from local municipal water tower to homes.
RHSeeger 5y ago
> Pressure reducing valves are used anywhere the pressure going into a home is above 80 PSI, and those are a lot more common than homes needing their own booster pumps My house has one of these, as the pressure would go up to 90 psi sometimes (iirc). Weirdly, my water pressure isn't consistent and can still burst to a "visibly from the tap" higher pressure for a few minutes at a time. I have no idea what causes it.
- devenson 5y ago
  I wonder if it's from water expanding in the hot water heater. That might be pressurizing your system after you send a volume of cold water into the heater after use. Your pressure reducer valve might be acting like a check valve preventing expansion relief into the municipal supply.
  - bbarnett 5y ago
    An interesting premise, but I am on a well, have a pressure tank, and the well hose/pump has a check valve. (Otherwise, water could slowly drain back into the well) So think of it as a closed system, and it is a common setup, yet I have not seen this behaviour.

kumarvvr 5y ago

Sorry, for got to mention. Most of India does not have direct water connections. Most homes have borewells, storage tanks and intermitten municipal supply. So there is no direct line from local municipal water tower to homes.

RHSeeger 5y ago

> Pressure reducing valves are used anywhere the pressure going into a home is above 80 PSI, and those are a lot more common than homes needing their own booster pumps My house has one of these, as the pressure would go up to 90 psi sometimes (iirc). Weirdly, my water pressure isn't consistent and can still burst to a "visibly from the tap" higher pressure for a few minutes at a time. I have no idea what causes it.

devenson 5y ago
I wonder if it's from water expanding in the hot water heater. That might be pressurizing your system after you send a volume of cold water into the heater after use. Your pressure reducer valve might be acting like a check valve preventing expansion relief into the municipal supply.
- bbarnett 5y ago
  An interesting premise, but I am on a well, have a pressure tank, and the well hose/pump has a check valve. (Otherwise, water could slowly drain back into the well) So think of it as a closed system, and it is a common setup, yet I have not seen this behaviour.