Groco FBV Series Tri-Flanged Ball Type Seacock Groco FBV Series Ball-Type Seacocks are manufactured for full flow and feature a triangular base. The patented field reversible handle allows you to select the closed position for orientation that best suits the installation. The handle has a square hole to accept standard ratchet, to help reach valves in hard-to-reach locations and ease actuation of difficult-to-operate valves. Features Base bolt pattern matches most popular brands, making retrofit