Install a properly-sized pressure relief value to protect the tank from over-pressurization. The pressure relief setting should be less than the maximum rated operating pressure of the tank.
To ensure adequate flow and pressure to the water using equipment, do not reduce piping/tubing size between storage tank and distribution plumbing. Piping/tubing size from the RO unit to the storage tank can be smaller than the distribution piping/tubing from the storage tank to the water-using equipment. Product water tubing/piping and fittings should be suitable for use with high purity water.
Select a location capable of supporting the normal operating weight of the tank with a safety factor of at least 2 times.
Operation Tips:
Drain water from tank and check storage tank pre-charge pressure on an annual basis
Sanitize storage tank on an annual basis
As pre-charge pressure varies, so does stored water volume and useable pressure. To follow are to simple descriptions of that relationship when all other factor remain equal:
Lower pre charge pressures allow the storage tank to accept more water, but water pressure diminishes more rapidly as water is drawn.
Higher pre charge pressure allow the storage tank to accept less water, but water pressure diminishes less rapidly as water is drawn.
Rapid on-off cycling of RO system may indicate insufficient pre-charge pressure. Drain water from tank and check pre-charge, then adjust as necessary.
Sizing:
Usable capacity will vary based on tank size, pre-charge pressure and RO system on-off pressure setting. The data shown below is one capacity example based on a 28 psi(1.9 bar) pre-charge with useable storage between 30/50 psi (2.1/3.4 bar):
Product complies with NSF/ANSI 61 Annex G, NSF/ANSI 372 and conforms with lead content requirements for "lead free" plumbing as defined by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking water Act due to take effect in January 2014.