RO Conversion Kit with Filters 50 GPD 3/8" Connection Goldline
As RO systems age, their components can start to malfunction leading to frustration and much time wasted trying to repair or replace various parts. Prevent the problems of an old RO system and avoid buying a whole new system by using this retrofit kit. This kit allows you to keep using your current tank and faucet, and only replace the manifold (main component that holds all the filters). Learn more about retrofitting your RO system here.
Again, you can leave your existing tank, faucet and lines installed in place. Simply remove your old system manifold, and plug the tubes into this RO conversion kit. All filters and extra tubing included. To use, your current system must have 3/8" tubing from tank to faucet.
Includes
Overall rating: 4.928571 / 5 from 14 reviews.
Review topics: ["quality","solution","water"].
"I got the RO Conversion Kit with Filters 50 GPD 3/8" Connection Goldline to replace the expensive to maintain Rainsoft filters. The reviews and the website made it look an easy DIY, but I had to hire a plumber who did it in 30 minutes. After one month, it is working fine."
"ESP Water is wonderful to work with. Very knowledgeable and get your products to you quickly."
"Worked out great, it was easy to install. The only other component that I needed to buy was a 1/4in to 1/4in coupler for the drain line. The kit included a 1/4in to 3/8in adapter for the drain line."
"Working great"
"Using a conversion kit like this is a great idea. High quality and excellent engineering are hallmarks in this system. ESP did an excellent job in guiding me to select this unit."
"Excellent solution to full replacement my unit. I use it yo replace the pieces on the original as needed."
"ESP water products was a pleasure to deal with very helpful and the system works great"
"This filter works great. Much better than my last one and it is very reasonably priced."
"Great"
"I was absolutely surprised on the turn around time and it is an awesome system."
Overall rating: 4.928571 / 5 from 14 reviews.
Review topics: ["quality","solution","water"].
"I got the RO Conversion Kit with Filters 50 GPD 3/8" Connection Goldline to replace the expensive to maintain Rainsoft filters. The reviews and the website made it look an easy DIY, but I had to hire a plumber who did it in 30 minutes. After one month, it is working fine."
"ESP Water is wonderful to work with. Very knowledgeable and get your products to you quickly."
"Worked out great, it was easy to install. The only other component that I needed to buy was a 1/4in to 1/4in coupler for the drain line. The kit included a 1/4in to 3/8in adapter for the drain line."
"Working great"
"Using a conversion kit like this is a great idea. High quality and excellent engineering are hallmarks in this system. ESP did an excellent job in guiding me to select this unit."
"Excellent solution to full replacement my unit. I use it yo replace the pieces on the original as needed."
"ESP water products was a pleasure to deal with very helpful and the system works great"
"This filter works great. Much better than my last one and it is very reasonably priced."
"Great"
"I was absolutely surprised on the turn around time and it is an awesome system."
Q:
How do Goldline under-sink reverse osmosis filter systems work?
A:
Goldline under-sink RO systems work by forcing tap water through a series of filters and a semipermeable membrane. Contaminants, including sediments, chlorine, and certain heavy metals, are trapped and removed. The clean, filtered water is then stored in a tank and ready for use, while the impurities are flushed out through a waste line.
Q:
How often do I need to change the filters and membrane in my Goldline reverse osmosis filtration system?
A:
For optimal performance of your Goldline reverse osmosis filtration system, it's crucial to maintain it regularly. Typically, pre-filters, like the sediment and carbon filters, should be replaced every 6-12 months depending on water quality and usage. The RO membrane should usually be replaced approximately every 2 years. Always consult your system's manual to ensure you follow the specific recommendations for your particular model. Regular maintenance not only ensures consistent water quality but also extends the lifespan of your Goldline RO system.<
Q:
Which Goldline membrane or filters do I need for my RO filter system?
A:
Select your Goldline RO system above. You will be taken to a new page that shows the available membrane and filters for your RO system. If you have any questions, please call our customer support team at 877-377-9876. We're available Monday through Friday, 9 am to 5 pm Central Time.
Q:
What contaminants does my Goldline reverse osmosis filter system remove?
A:
Your Goldline reverse reverse osmosis filters and membrane can remove common pollutants from water including pesticides, sulfates, fluoride, nitrates, lead, pharmaceuticals, arsenic and more. The RO system's carbon filter will also remove chloramines and chlorine.
Learn more about what contaminants can be removed with reverse osmosis filtration.
Q:
What filters are included in the GoldLine Model 50 5-Stage RO replacement set?
A:
The GoldLine Model 50 uses a 5-stage configuration: a sediment pre-filter, two carbon block pre-filters, a 50 GPD RO membrane, and a GAC post-carbon filter for taste and odor. Each stage targets specific contaminants before final polishing. You can find filter options in the GoldLine Model 50 Replacement Filters collection.
Q:
How often should I replace the filters in my GoldLine Model 50 RO system?
A:
Replace the sediment and carbon pre-filters every 6–12 months, the RO membrane about every 24 months, and the post-carbon filter every 6–12 months to maintain peak performance and water quality.
Q:
Can I buy a complete filter kit for the GoldLine Model 50 RO system?
A:
Yes. ESP offers a complete GoldLine Model 50 Filter Replacement Kit with RO membrane so you can replace all core elements at once. Find it in the GoldLine Model 50 Replacement Filters collection.
Q:
Why is the RO membrane important in the GoldLine Model 50 system?
A:
The TFC RO membrane is the heart of the system — it removes dissolved solids and microscopic contaminants that pre-filters can’t catch. Replacing it on schedule (typically ~2 years) helps ensure clean, safe drinking water.
Q:
How do I know when to change GoldLine Model 50 filters?
A:
Common signs include slower water output, discoloration, or changes in taste/odor. If water flow decreases or TDS levels rise, replace the appropriate filters even if it’s before the suggested schedule.
Q:
Are GoldLine Model 50 replacement filters easy to install?
A:
Yes — these filters are designed for simple DIY replacement. Turn off the feed water, relieve pressure, then pull out the old cartridges and insert new ones following the system manual. For help in replacing your filters, use the RO Filter Install Guide.
