Keep your boat dry and well-drained with this large square scupper valve set, designed for efficient one-way water flow. It allows water to drain out while preventing backflow, helping protect your deck and bilge from flooding.
Constructed from durable, marine-grade materials, this scupper valve is built to withstand harsh conditions including saltwater, UV exposure, and constant use. The integrated ball system automatically seals against incoming water, ensuring reliable performance even in rough conditions.
Its larger design makes it ideal for boats requiring higher drainage capacity, while the sturdy mounting plate allows for secure and easy installation.
A reliable and essential component for maintaining proper drainage and safety on your boat.






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