Surge Trap Drain Flapper & Vacuum Tank Seal

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Drain flapper for GEA WestfaliaSurge 3 inch Traps
Fits 7750-0028-525 Surge 3 inch trap with pvc elbow drain at bottom (see detail image)
sold each
also fits SP-11, SP 22, & BB vacuum pump tanks
Rubber drain Valve approx 1 7/8  inch O.D. outside diameter
Note there is a larger version of this - 7750-0020-440 - for Alamo vacuum tanks and alamo pump exhaust