Designed for boats with self bailing cockpits, this stainless steel scupper valve with thru-hull fitting features a rubber flapper that opens to drain water out and closes to prevent water from washing back in. Silicone gaskets ensure a watertight seal, while barbed end accepts multiple hose clamps. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.