The S2016-6 Drain Restrictor is an improved flow control for S1227RS membranes, which are commonly used in Microline TFC-25S and TFC-25D RO Drinking Water Systems. Upgrade your existing Yellow Drain Restrictor to a more water efficient and reliable external flow control that is less prone to breakage and clogging.
Steps for installation:

1. Remove old Drain Restrictor from manifold drain port and discard. 
   
2. Apply Teflon tape to new Male Connector fitting provided and hand tighten into the manifold drain port.
   
3. Insert 1/4" OD drain tube into the open end of new external flow control.