> > Is it possible we were a little premature in abandoning the notion of a
> > simple check valve to prevent back flow on parallel connected pumps?  It
> > would solve ALL the problems at the cost of reliability of the
> check valve.
I agree. Jim's right for once :)
If I persue the EWP later on I'll be looking for a suitable check valve. If
anyone finds one in the meantime, please let us all know.