How much is too much?

[Marianne]

This high pressure rating is to assure the membrane does not compress and get distroyed. These are low pressure membranes used so most households can generate RO water without the use of any addtional pressure (booster pumps).

You have a unique situation, most people's pressure is no where close to that. Dow is a very reputable company, I imagine their limits are conservative. It is best to stay in those limits thought.

Are you producing more than the rated flow now? I imagine you are. If you look at the membrane curves you will see the differences in flow rates the varibles make.

http://www.dow.com/webapps/lit/litor...ilepath=/noreg

This URL (if it works) is the spec sheet. I think it is quite helpful

Marianne