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After putting my DE filter back into circuit after winter hibernation I conduction my inspection on the unit, a Hayward PRO-GRID D.E. Filter system model DE2420 as part of a yearly service. I see an issue right from the beginning. A leak forming from the top of the container, not from the gasketed area though.
This is fine though because the gauge was also on the way out and this is original equipment. So I begin the process to remove the old unit, prepare the container top for the new unit and then install and test the new unit.
I ended up needing a whole new unit which called for
Hayward part DEX2420MAR2
If the unit was ok and just leaking from the O-rings the kit is
Hayward part DEX2420Z8A
Same applies for model DE3620, DE4820, DE6020, DE7220