Water treatment Components


Filmtec Membranes, Hydranautics, Toray and Koch Membranes

Membranes - Reverse Osmosis, Filmtec, Hydranautics and Koch Membranes
Crossflow membrane filtration is a pressure-driven separation process. Application: Industrial, food, water, chemical, and biotechnology markets, as well as for those providing environmental protection.

Membranes serve as highly-engineered, physical barriers that permit the passage of materials only up to a certain size, shape or character. SAI TREAT offers reverse osmosis membranes, filmtec membranes, koch membranes, and Hydranautics membranes in a variety of configurations, materials and sizes; each designed to meet specific application needs

There are four main membrane separation processes currently employed for liquid/liquid and liquid/solid separation: microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO).

Spiral wound products have become the most commonly used membranes for industrial water applications such as boiler make-up water, brackish water treatment, seawater desalination, microelectronics and pharmaceutical water applications. These membranes are available as UF, NF and RO.

What is Semi-permeable Membrane?

Semi-permeable membrane refers to a membrane that selectively allows certain species to pass through it while retaining others. In actuality, many species will pass through the membrane, but at significantly different rates. In RO, the solvent (water) passes through the membrane at a much faster rate than the dissolved solids (salts). The net effect is that a solute-solvent separation occurs, with pure water being the product. (In some cases, dewatering is desired to concentrate the salts). 

What is Osmosis?

Osmosis is a natural process involving the fluid flow of across a semi-permeable membrane barrier. Consider a tank of pure water with a semi-permeable membrane dividing it into two sides. Pure water in contact with both sides of an ideal semi-permeable membrane at equal pressure and temperature has no net flow across the membrane because the chemical potential is equal on both sides. If a soluble salt is added on one side, the chemical potential of this salt solution is reduced. Osmotic flow from the pure water side across the membrane to the salt solution side will occur until the equilibrium of chemical potential is restored. In scientific terms, the two sides of the tank have a difference in their “chemical potentials,” and the solution equalizes, by osmosis, its chemical potential throughout the system. Equilibrium occurs when the hydrostatic pressure differential resulting from the volume changes on both sides is equal to the osmotic pressure. The osmotic pressure is a solution property proportional to the salt concentration and independent of the membrane.

SAI TREAT , Inc. is a wholesalers’ of the reverse osmosis membranes, Hydranautics membranes, filmtec membranes (dow membranes), koch membranes, toray membranes

Hydranautics Membranes

ESPA Low Energy/High Flow Tap & Brackish Water Thin Film Membranes
CPA High Rejection Tap & Brackish Water Thin Film Membranes
SWC Seawater Membranes
LFC Low Fouling Membranes
ESNA Nanofiltration Membranes

Filmtec Membranes

Tapwater Commercial RO 2.5"x40” and 4"x40” membranes, TW30, XLE, LP, BW30, TW30HP
Tapwater Industrial RO 4”x40” and 8”x40” membranes, l BW30, BW30LE, LE, XLE, FR, RO, HSRO
Seawater RO Elements 2.5"x40”, 4”x40” and 8"x40” Seawater membranes, SW30, SW30HR, SW30HRLE
Nanofiltration Elements 4”x40” and 8"x40” Nanofiltration membranes, NF90, NF270, NF200, NF
Semiconductor Grade 8" Dia. Semiconductor SG, SG30

Koch Membranes

ULP Ultra Low Pressure Elements for Tap & Brackish Water Thin Film Membranes, 4040ULP, 4820ULP, 8821ULP, 8831ULP-575 magnum..etc.
HR High Rejection Tap & Brackish Water Thin Film Membranes, 8822HR-400, 8822HR-365, 4820HR, 4040HR, ROGA8221HR …etc.
SS Seawater Membranes, 2540SWHF, 4021SW, 1820SW, 1820HF, 2822SS, ..etc.

Toray Membranes

TMG10 Low Pressure Brackish Water
TM710, TM720-365, 
Brackish Water
TMG20-430, TM720-430 Low Pressure Brackish Water
TM810, TM820-370, M820-400 Seawater


Multiport Valve



Ion exchange resin, water softener resins and filtration media of leading brands


SAI TREAT offers high quality ion exchange resin, water softener resin and filtration media with similar performance as many other well-known brands. SAI TREAT also stocks many of the well-known brands in water filtration media and resin, including Clack, Thermax, Ion pure, Purolite. We also stock large quantities of these products for immediate delivery. Our media and resin are priced very competitively.

Clack Media

SAI TREAT distributes Clack’s filtration media in different mesh sizes. Regardless of the type of water treatment required, Clack has a filtration media suitable for different needs. Clack product line can address a variety of water treatment problems commonly found in ground and well water supplies. Clack water treatment filtration media are manufactured to solve a broad range of treatment problems from the reduction of iron complexes to the treatment of waters requiring pH adjustment. Clack’s range of filtration media include: coal base and coconut shell carbon media, anthracite, calcite, garnet, manganese greensand, birm, pyrolox, filter Ag, filter sand, and gravel.

Thermax Resin

SAI TREAT distributes Thermax Gel cation exchange resin (T-40), high capacity gel resin (T-42) and macroporous resin (T-42MP). Resin has an important role in water softening. 

Water Softening is used for the removal of calcium and magnesium ions which are the hardness (scale) forming constituents of water. When water is passed over an ion exchange bed in a softening process, Ca2+ and Mg2+ ions are exchanged for the equivalent Na+ ions. The water obtained contains only Sodium salts, which do not produce boiler scales since they are readily soluble in water. This process is used for scale prevention in Low and Medium Pressure Boilers. After every service cycle the resin is backwashed with water followed by regeneration with 5-15% of NaCl solution.






FRP Tanks (Fibreglass Reinforced Plastics)


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