Need a 40 inch ro membrane? Here is what you should know before buying!

Okay, so the other day, I needed to swap out the membrane in my 40-inch RO system. It’s not something I do often, but it’s a pretty straightforward process if you’ve got the right tools and a bit of know-how. I figured I’d share my experience here, in case any of you folks are looking to do the same.

Getting Started

First off, I gathered everything I needed. Obviously, the new 40-inch RO membrane was the star of the show. I went with a 4040 model. I heard the 4040 model works well with river water, which is my water source. And, I made sure to have a wrench that fit the housing, some silicone grease, and a bucket to catch any water spills.

Removing the Old Membrane

The system was shut down, and the water supply turned off. Then, I depressurized the system. This is important to do safely.

Next, I located the end cover of the membrane housing and carefully unscrewed it using my wrench. Once the cover was off, I could see the old membrane inside. I grabbed onto the end of the old membrane and pulled it straight out. It was a bit snug, but it came out without too much fuss. It’s pretty satisfying to see the old, gunked-up membrane come out, knowing you’re about to replace it with a fresh one.

Putting in the New Membrane

With the old membrane out of the way, I took the new 4040 membrane and applied a thin layer of silicone grease to the O-rings. This helps create a good seal and makes it easier to insert the membrane into the housing. Then, I carefully slid the new membrane into the housing, making sure it was oriented correctly. The last thing you want is to put it in backward!

Putting Everything Back Together

Once the new membrane was in place, I screwed the end cover back onto the housing, making sure it was tight but not over-tightened. You don’t want to crack the housing or strip the threads. After that, I slowly turned the water supply back on and checked for any leaks. Thankfully, there were none.

Testing It Out

I let the system run for a while, flushing out any air or loose particles from the new membrane. The water pressure and flow rate seemed normal, so I figured everything was working as it should. The 4040 membrane has a larger surface area than the one I used to have. I could tell right away that the filtration capacity was better, just as I expected.

Wrap-Up

And that’s pretty much it! Replacing a 40-inch RO membrane is a manageable DIY task. It’s not rocket science. Just take your time, make sure you have the right parts, and double-check your work as you go. Now my RO system is back in action, and I’ve got clean, filtered water once again. Feels good to get that done!

• Get the new 4040 membrane, wrench, silicone grease, and a bucket.
• Shut down the system.
• Unscrew the end cover and pull out the old membrane.
• Grease the O-rings and slide in the new membrane.
• Screw the cover back on and turn the water on.
• Check the water.

I hope this little write-up helps someone out there. Happy filtering!