4021 Membranes

4021 membranes are the smallest of the 4″ membranes we offer. Yet, at 40″ long and producing a permeate flow of up to 1,000 gallons per day (158 litres per hour), its size does not sacrifice on quality. Like all membranes above 3″, these are constructed by spiralling layers of thin film polyamide composite membrane sheets around the central permeate collection tube and secured in a shell of high grade fibreglass.

ProWater produces this membrane in two grades to cover applications of differing sectors, each tier boasting higher efficiency and purer product water, all at a more consistent rate.

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