I do not understand how the cover with teflon bearing on just one side helps the OTHER side of the impeller? the pressure will be just as strong on that side and wont be a spinning bearing to take the side pressure off the impeller blades. Makes no sense to me how it can run dry unless both sides are able to free spin. And you still got the cam and rubber arms flailing about. Whole thing seems iffy to me.
The promotional video I saw, the guy said it can run dry for hours.
And the other thing is arm set. The impellers arms supposedly when sitting for a while, they are compressed by the cam and don't work as well. Unless that is now a myth?
Other thing, most of my impellers, the arms crack due to the rubber aging.
Only a globe impeller I was able to run for 4 years and the arms were ok, but the sides wore down, then it would not suck water, no ability to prime.
How will it help with arms cracking ? It can not. I think they are out of business for a good reason, not enough interested buyers, due to the improvement claims make little sense. Did they try to sell the business?
I have a jabsco gear driven impeller pump with 2 impellers for the FWC, continually bathed in antifreeze, and those impellers have never worn out, not for the last 15 years of use.
Imagine a bronze pump with one large inlet and 2 small outlets, each outlet fed by its own impeller. How bizarre is that.
The raw water impellers do go bad.