vincent monaco
December 04, 2017

on the 502234A vent, I've been on installations where; 1) the cap is missing wafers, 2) the cap screws down tight, 3) the cap does not screw down tight, but spins at the bottom of it's travel.
How many wafers should there be in each cap?
Why would some caps screw down tight and others not?
thank you

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