The Neeco FLSN API-6A gate valve contains a one piece seat, without any body bushings, perfect for use on BOP stacks and drilling manifolds in severe applications for offshore and onshore rigs. The Neeco FLSN valve is a full-bore, through-conduit, double-flanged valve that contain a non-rising stem and solid single-piece slab gate. They are forged component valves with a bi-directional design and include a positive metal-to-metal seal. FLSN valves do not utilize split gates or two-piece seats that can potentially pressure lock  has been designed slab gate valves for pipeline service with double block and bleed floating seat arrangement. These gate valves are full bore to facilitate pipeline pigging operation.