Description 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 Babson Surge number was 14834 GEA 7750-0014-834 Original Parts by GEA Farm Technologies Westfalia and Surge Brands 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 Updated September 2025
