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The Hydrotech 33139 Retrofit Kit is the correct kit for the following systems:
The Hydrotech 33139 Retrofit Kit includes an internal plug assembly for the manifold and a capillary flow control contained within the red drain line tubing. This retrofit kit is compatible for use with the Hydrotech 101, 102, 103, 1010, 1020, and 1030 series reverse osmosis systems.
This flow control kit should be matched with RO membranes with a 75 gallon per day capacity, such as the Hydrotech 33001056 TFC 75 GPD Membrane. If you have any of the discontinued RO systems and are using the 40600007 flow control, you will need to update to the 33139 retrofit kit and move from a 45 gpd membrane to a 75 GPD membrane.
Hydrotech 33139 Retrofit Kit Specifications:
Once you've installed the Hydrotech Retrofit Kit, you can use the 40600042 Water Flow Restrictor (sold separately), which should be changed each time you change your reverse osmosis membrane. The flow restrictor creates pressure through the RO membrane so as to keep a proper balance between the rejected water and the filtered water.
The Retrofit Kit includes a flow control tube and a flow control retrofit plug.