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Automatic permeate recycling depending on permeate conductivity with freely programmable limit to provide high quality water at the point of use. Adjusting of conductivity limit at controller of the RO unit. If no water of the required conductivity is provided (e.g. at the start of the reverse osmosis unit), the permeate is not conveyed to the point of use but recycled to the suction side of the pump of the reverse osmosis unit.
Consisting of an automatic valve (alternatively three-way motorised ball valve or butterfly valve depending on unit size) and a check valve, which are mounted and wired on the frame of the RO unit.

Benefits

• Ensures constant permeate quality
• Already mounted and wired on the frame of the RO

Applications

• PR is required if there is a fixed limit value for permeate conductivity and this may not be exceeded even for a short time
• Suitable for series UO-D (FU, CD), UO-S7 KR/FU, UO-D AS/FU and UO-D BW/FU

Material:

PVC

Conditions of use:

The PR option has to be ordered together with the reverse osmosis unit. The maximum permissible permeate back pressure is 0.8 bar. For higher permeate back pressure, a pressure valve with pressure gauge must be added.