Image API Flanged Drop Adapter with Sight Glass Jump to Section Product Options Related Products Product Options Part Number Adapter Size Flange Size Seal Material 4503 4" 4" TTMA Baylast™ Aluminum 4501 3" 4" TTMA Baylast™ Aluminum Related Products Image 6200-Series Side-Lever Type Drop Elbow Image API Drop Adapter Image API Drop Adapter with Sight Glass Image API Load Only Valve Image API Load/Unload Valve Image Gravity Drop Adapter Dust Cap