Salt and water transport inreverse osmosismembranes: Beyond the solution-diffusion model

Replacement RO Membrane: Express Water RO membranes are made with the highest quality materials for long-lasting filtration and value.

With 100+ locations across the Northeast, F.W. Webb Company is the largest industrial equipment supplier with 16 areas of expertise including Plumbing, Heating, HVAC, Refrigeration, PVF, Building Controls, Propane Gas Equipment, Water Systems, High-Purity Process Components, Industrial PVF Specialties, Thermoplastic Piping, Process Controls, Fire Protection & Fabrication, Commercial & Industrial Pumps, Water Works, and Alliance Environmental Group.

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Choose the filtration that lasts longer to give you the best value: The Express Water Reverse Osmosis Membrane (50 or 100 GPD) is the best in reverse osmosis filtration.

Reverse OsmosisSystem

A high capacity RO Membrane improves filters up to 99.99% of impurities from your water, improves taste, and gives you the best value from your system.

Semipermeablemembrane

On Demand Support: Support from experts who can answer any of your questions about your replacement reverse osmosis membranes

RO Membrane Replacement: Each Express Water replacement RO membrane is specially designed for quick and easy replacement. Get the cleanest water and the best value in your reverse osmosis water filter.

Founded in 1866, the family-owned company has over 100 locations across the Northeast to support the needs of customers from commercial and residential contractors to industrial and institutional operators of large facilities. F.W. Webb offers an extensive inventory, personalized customer service, and a dedicated fleet of delivery trucks to service our customers' needs.the Northeast, United States. Whether you have a planned project, emergency job, or ongoing maintenance and repairs, you can rely on F.W. Webb for the products and parts you need.

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Watts Regulator RK009M2-RT2 Repair Kit Complete Rubber Part 2 Inch 0887547 for 009 Series Reduced Pressure Zone Assemblies

The RO membrane filter is good for up to 1 year of use. This is based on average water quality. Your water filter life may be different depending on your water quality, temperature, and incoming pressure. The membrane focuses on the most difficult to reduce impurities found in water.

Reverse Osmosis Membrane Replacement: Experience what water should taste like with the Express Water reverse osmosis water filtration system reducing up to 99.99% impurities.

Reverse osmosis

Density grading of the membrane layers gives your filtration the most surface area, meaning your filter catches impurities as small as 0.0001μm (1/10,000th of a micron). Fast 50 or 100 Gallons Per Day (GPD) filtration. Inner layers made from polyamide thin-film composite.

Reverse osmosiswater

Watts Regulator 1-LF009M2-QT Backflow Preventer LF009 Reduced Pressure Zone Assembly 1 Inch Lead Free Bronze Quarter Turn Female 175 Pounds per Square Inch 33 To 180 Degrees Fahrenheit

Reverse Osmosis Membrane: High density graded RO membrane ensures even the smallest of impurities from your drinking water including heavy metals, TDS, arsenic, fluoride, and more.

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The Express Water Reverse Osmosis Membrane reduces major impurities from your water and provides clean water for all home uses. Drink water that’s free of 99.99% of particles such as TDS, fluoride, heavy metals, chlorine, taste, odor, VOCs, as well as arsenic, lead and nitrates.