Do flow restrictors go bad?

Tombones · Jul 1, 2018

Also what is the proper flow restrictor for a 75 GPD RO unit.
Thanks ahead for your answer.

Crabs McJones · Jul 1, 2018

550ml is recommended for a 75 GPS membrane. Not sure if they can fail though. I'd imagine the ones that have the flush valve built into them could.

Tombones · Jul 1, 2018

My RO unit does have a flush valve. RODI gives me 1 cup in 80 seconds and the waste water gives me 1 cup in 35 seconds. Check my math but that is only a rejection rate of 2.2. It is my understanding it should be 4 to 1.

theMeat · Jul 1, 2018

550-600 ml should be good for 75 gpd membrane

Recommend changing flow restrictor when you change your membrane. Yes they can fail, but more likely start to function out of spec