Nowadays due to water shortages and overcrowding of residential areas, most locations don’t have adequate water supply pressure and the water supply in most areas cannot climb up to the second or third level of the house, thus you need your localized pressurized water supply system.
Most pressurized water setup for a 2-3 level home with 4-7 occupants will just require a 40psi water pressure with a 500 liter reserve tank. A bigger tank will require more space and a bigger motor pump will demand more power and consequently a higher electric bill. You will definitely need a bigger reserve tank if your community water supply pressure is very bad – very low pressure and very low flow rate.
A 40psi pressurized water system with a 500 liter reserve capacity will cost around php80k for both labor and materials depending on your location.
A basic pressurized water system will consist of the reserve tank, pressure tank, motor pump, and power supply. The community water supply first goes into the reserve tank, and the pressure tank and motor pump will draw water from the reserve tank. Whenever a tap is opened, the pressure tank will supply the pressurized water and when the pressure goes down due to prolonged use of the tap, the motor on top of the pressure tank will kick in to supply more water and more pressure to the system. When the reserve tank mechanical sensor detects a lowered water level, it opens the system to let more community water into the reserve tank. When the second sensor inside the reserve tank which is the low water sensor, which is an electrical switch sensor, detects a remarkably low water level, like when there is no community water supply flow, it switches off the water pump to prevent it from over heating the pump due to continued operation with a depleted water supply from the reserve tank. That is the basic operation of the pressurized water system.
Be sure to install a bypass system in your pressurized water system that bypasses the pressurized water system during a power black out so you can still continue to have a water supply – a low pressure water supply – during a power black out. Be sure to close the bypass valve back when the power comes back, otherwise your home water pressure will be lowered than 40psi since your pressure tank will also pump water back into the community supply when the bypass valve is open.
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