Max pressure a float valve can seal?

[DRoseum]

If you are using oil, I recommend building the auto shut off level sensor. I use natural gas and built one and it works like a charm. Great to have that safety net.

[Pdiamond]

I believe you have been given a lot of information. my personal thoughts are to stick with feeding a head tank, to feed your evaporator. Most have a sight glass on them so that you can see when they are getting low and need to be refilled, or they have a float switch mounted in them to automatically feed in more sap. This way supplies a constant amount of sap to the evaporator.

[BCardella]

Thanks for all the insight fellas. I think I’ve gone back to the plan to convert the RO over to a typical feed and pressure pump setup and just use a head tank. I already have a 100 gallon rectangle poly tank I picked up just for that reason. No sight glass needed. For what I paid for the unit, it’s worth it all day. The thought has crossed my mind even before this thread that there must be a reason this unit is the only one designed like this and they stopped making them.