Photo is from another thread, can’t find that threadm but don’t need to for this question.
The main cause of the failure/collapse of this flex tube was shoddy construction in combination with some chemical damage but mainly vacuum force.
Question : when you say vacuum force, you mean mostly from the pressure difference/change when the pump goes from On to Off or vice versa, right?
Not vacuum force when I turn a jandy valve while the pump is running? Reason I ask: my jandy valve is old (but not leaking so fine) so I can rarely make a “slow gentle gradual turn” (the single jandy I am concerned about controls both the skimmer & the drain). I am wondering if my less-than-gentle turning of that jandy is rough/undesirable insofar as possibly creating another collapse in the flex tube that remains (we did change out the collapsed one obviously).
I can get a new neverlube jandy (that will allow gentle turning) but I’d rather not if I don’t need it. Flex pipe collapse “from vacuum force” is more an issue of the “pump going On to Off or vice versa” than an issue of “too quickly turning the jandy while the pump is running”?