List, there are 2 ball and spring assemblies contained in the TR4 Purolator Oil
Control Head. I understand the function of the adjustable assembly. I don?t
understand the function of the non-adjustable ball and spring assembly. What
function does it serve? Might it be a relief valve for an over pressure within
the filter and if so does it somehow result in limiting full flow thru the
filter?
I seem to recall reading about how the control head works a number of years ago
but can?t find that article now.
Thanks,
JVV
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