I was swapping delivery valves between an eco pump and a td pump so I could use the td pump with my injector lines and I noticed a difference of the internal valve between the two and wondered if maybe one flowed more or differently that the other. The 3 sided one came from the eco pump with long delivery valves ,the 4 sided from short td delivery valves. I'm wonsering if I could run the 4 sided ones in the td pump with the long delivery valves and not have to worry about the breaking pressure being different and having to change the adjusting shims???
By great Hagar,it`s adjustable but very little chanse you need that.But its can miswork of corse.
I think you could change the end part of the delivery valves as long as you switch all four, but I don't believe that any of the designs of the delivery valves are the limiting factor WRT flow and so you won't gain anything.