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14-gallon tank’s delivery pressure:
10 gallons —> 50 psi output pressure ( pressure inside tank )
9.0 gallon —> 40 psi
7.8 gallon —> 30 psi
6.1 gallon —> 20 psi
3.3 gallon —> 14 psi
1.6 gallon —> 10psi
Tank empty —> 7 psi ( pre-charged pressure )
8) Ice-Maker Inlet Pressure Requirement:
If your ice-maker requires a minimum input water pressure of 20-30psi, you need to have at least
50+psi input water pressure going into your non-pump RO system. If your water pressure is under
50psi, the tank will not fill up enough, and the delivery pressure to your ice-maker may be sluggish
and unstable. To boost output pressure, you can add a Permeate Pump to your RO system.
9) Feeding Multiple Outlets:
Feeding the filtered water to multiple outlets is do-able. The key is choosing the right RO model that
fits your house’s water pressure level. This model should fill up the tank quickly and fully. A frequently
full tank will then provide good delivery pressure to feed the multiple outlets in your house. You
should get the 14 gallon tank upgrade, this bigger tank holds 3 times more water than the standard
4gal tank. It will give you the extra water and delivery pressure you need to feed the remote points.
We suggest limiting output points to no more than 3 outlets. Total tubing distance should be within
40 ft. horizontal and 15 ft. vertical from the RO system.
10) Insufficient Water Pressure – Problems with Non-Pump RO Systems:
The 3 most common problems caused by low input water pressure:
1) Tank does not fill up, get little water from tank
2) Sluggish flow at the dispensing faucet
3) RO makes water slower than the claimed GPD
If you experience these problems, Please check your input water pressure as the first step. This will
often solve the above listed problems.
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