[U.S. wfp USER]

Does anyone know the rejection rate of a 4040 RO unit?

[Roy Harding]

Mine is 50% pure 50% watse but you can set it up as high as 60% pure 40% waste.

Roy

[sair]

i run mine at 20 rejection with 80 keep

[U.S. wfp USER]

i run mine at 20 rejection with 80 keep

Care to explain your set up and how you maintain this 80/20?

Also is that a high pressure or low pressure membrane?

Thank you.

[Roy Harding]

Mine is a high presure membrain when i set mine up they recomended a 50/50 setup as they told me the lower the rejection rate the more sludge you had in the housing.

Roy

[U.S. wfp USER]

Are you using a booster pump to produce that 50/50?

[sair]

the membrian within industry standard is normally set to somewhere between 20-25 % rejection rate

i will allways booster set the 40x40 as they perform better saty cleaner and last longer

[U.S. wfp USER]

Sair,

Thanks for your insight.  What booster do you use?