What is the water pressure needed to send water from a tank to a purifier at a distance of 7 ft? What is the required height?

Hi all,

I want to install a water purifier (UV+UF) at my home. The distance of water purifier from water tank (1000 lt) is 7 ft. Is it sufficient if I go in for an electrical water purifier? I want to know what is the water pressure from 1000 lt tank (the pipe used from water tank to machine area is of inch 1-1/4") please note minimum water pressure is required for UV is - Water Pressure Min: 0.4 kg/sq. cm; Max: 2.0 kg/sq. cm. Please advise me on the following:

1) What is the water pressure generate in above condition.

2) What is the required height from the UV machine to water tank for the above condition?

I am living in a small village where I cannot get expert help. Please help.

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