Product specifications

Your PWS™ BEV-300 Series system includes seven unique stages in ﬁ ve different modules. Every system

combines the proven water ﬁ ltration methods of carbon adsorption, reverse osmosis, and deionization. By

carefully matching the components utilizing these methodologies, Pure Water Systems is able to assure

your system produces water which meets or exceeds the Vincent standards for bio-compatibility.

A LOOK AT THE SEVEN STAGES

Stage One

Water entering the system is ﬁ rst subjected to our spun-polyester dual gradient (10-20 micron) sediment

pre-ﬁ lter. Any suspended particles such as sand, rust, or other deposits commonly found in the feed

water supply are removed. This protects the reverse osmosis membrane downstream from particles which

might clog the pores of the membrane. This pre-ﬁ lter has been carefully selected for its extremely high

dirt holding capacity.

Stage Two

Before the feed water reaches the reverse osmosis membrane, it is subjected to twin, unidirectional

granular activated carbon pre-ﬁ lters. Flow is lengthwise, not radial, for maximum contact time and

organic adsorption. Pure Water Systems has chosen to use twin carbon ﬁ lters in this stage where every

other manufacturer uses only a single cartridge. By using twin cartridges we insure complete removal of

organic contaminates including pesticides, herbicides, and other hydrocarbon based compounds.

A single gram of steam washed, bituminous grade, granular activated carbon typically has ~1500 square

meters of surface area—meaning our twin GAC pre-ﬁ lters provide over 400 acres (1.62 square kilo-

meters) of surface area where organic contaminants dissolved in the water have an opportunity to be

adsorbed and eliminated. This immense GAC surface area also insures complete and total conversion of

chlorine—protecting the polyamide thin-ﬁ lm-composite (TFC) reverse osmosis membrane downstream.

Stage Three

A custom designed and extremely efﬁ cient spiral wound reverse osmosis membrane produces up to 40

gallons (~150 liters) of puriﬁ ed water per day. This membrane utilizes the unique properties of a semi-

permeable material which allows passage of pure water molecules while not allowing dissolved salts,

heavy metals, and organics to pass through. Our extraordinary membrane is designed to consistently and

signiﬁ cantly reduce the total dissolved solids in the source water supply by greater than 97%. It also has

a tremendous capacity to completely reject organic and biological contaminates, including water-borne

microorganisms. (EPA EST. No. 52531-FL-01)

The operating parameters for this custom designed reverse osmosis membrane are found in the

Speciﬁ cations section of this manual.

Stages four through seven are contained in our unique four-stage, RO matched deionization module.

Stage Four

This stage includes a unique blend of deionization resins carefully matched to our exceptional reverse

osmosis membrane and provides superior rejection of monovalent ions and the ionic residues of pesti-

cides and other hydrocarbon contaminates. It is the inclusion of deionization resins which sets the BEV

Getting to Know Your BEV System

CHAPTER