1.01 GPM Hydracell pump for watermaker how many GPH product ?

[ReneJK]

When we bought our Bene 473 it had all the parts to make a watermaker , all new never used , o we have a 2540 membrane + pressure vessel , the 1.5-2hp 240 volt motor a high pressure pump etc etc

Now preparing to put it all together I am trying to figure out how many GPH 'product' I can expect

After a lot of reading and comparing with other watermakers I *think* I know the answer ? or approx guestimate ? maybe someone can check my thinking

the HP pump is a Hydra-cell G22 (metric version of the F22)


Now the Mfg states this pump delivers around 1.01 GPM to the membrane , comparing with Rich' watermaker , that uses a pump that supplies 1.6 GPM to produce 20GPH product , is it save to say my pump and install will make 16GPH (-20% as it supplies 20% less water to the membrane)

Now I thought I had it figured out until I came across this thread (the only other setup I could find with this pump) , where someone built a WM with the same membrane and pump and claims 25GPH (!!) and that made me scratch my head

The Watermaker Dilemma - Page 2 - Cruiser Log World Cruising & Sailing Forums

its a membrane pump rated @ 1.01 GPM @ 1500 PSI , does it somehow deliver more water @ 800 PSI ?

F20 Series (US) / G20 Series (Metric)




Q: with this Hydracell pump , what kind of GPH range can I expect ?