Replacing O-Rings - RO Membranes

Advanced Reverse Osmosis Technology

Replacing O-Rings - Movement of the spiral wound membrane elements within their pressure vessel can commonly cause abrasion and breaking of the O-rings that seal the inter-connector to the element permeate tube.

A sudden increase in permeate conductivity, not accompanied with a noticeable increase in permeate flow rate could indicate a broken or missing O-ring. Profiling and then probing to determine if only individual pressure vessels/membrane elements are causing the increased conductivity will indicate if O-ring damage is the problem.

To replace the O-ring, the RO should be shut down and allowed to drain by opening the sample valves. The end-cap is then removed. Usually O-ring damage is visible. The O-ring is replaced by hand, wetting with lubricant (glycerin – use sparingly) if necessary.

For further information or assistance please contact Reverse Osmosis Chemicals International on +44 (0) 161 877 2334 or e-mail info@rochemicals.com.