Attwood Scupper Valve

The Attwood Scupper Valve is an essential component for any boat with a self-bailing cockpit, providing reliable water drainage from the deck without requiring manual pumping. After years on the water, experienced anglers and boaters know that effective scupper systems are critical to keeping cockpits dry and safe during rough conditions or when running through chop. This valve serves as a one-way exit for water, preventing backflow while allowing rapid drainage—a feature that becomes invaluable when you're focused on casting or running offshore and need to trust your boat's design to handle deck water automatically.

Built from durable acetal construction, the Attwood Scupper Valve features a 2-7/8" diameter opening that integrates seamlessly with the 3875B thru-transom thru-hull connector system. The acetal material resists corrosion and UV degradation better than many alternatives, holding up to constant saltwater exposure and intense sun without brittleness or failure. Installation requires drilling screw holes for mounting to your transom, but the straightforward design means setup can be completed quickly without specialized tools or marine technician fees—an advantage for boaters who prefer DIY maintenance and want to keep their vessel in peak condition.

This scupper valve is ideal for anglers running center console or open-cockpit fishing boats where water management directly impacts safety and comfort during multi-hour trips. It also serves as a reliable replacement for worn 3881 thru-transom scuppers, making it an economical way to restore your boat's self-bailing capability without replacing the entire through-hull system. Whether you're upgrading an older vessel or maintaining a newer model, the Attwood Scupper Valve ensures your cockpit stays dry so you can focus on the fishing, not the bilge pump.