Marine Boat Scupper Valve | Ball Check Drain Valve for Cockpit & Hull

Product Features

• Ball Mechanism – Spherical valve opens under internal water pressure to allow drainage, closes under external pressure to prevent seawater from entering
• Anti-Clogging Design – Simplified valve body structure reduces impurity retention; prevents debris such as leaves and small fish from entering the valve
• Good Sealing Performance – Prevents water from seeping into the boat even when closed
• Corrosion-Resistant – PC+HDPE+PVC construction withstands saltwater, UV, and harsh marine conditions
• Lasting Durable – Long service life, replaces worn rubber flapper valves
• Easy to Install – Screw-lock base design; 5-step installation without special tools

Installation Steps

1. Remove the old screw holes reinforced with glue
2. Install and fix the base with screws
3. Rotate the shell to lock it onto the base
4. Tighten the screws on the housing to ensure the valve is firmly secured to the hull
5. Installation is complete

• Product Name: Boats Scupper Valves
• Material: PC + HDPE + PVC
• Color: Clear / Transparent
• Weight: 75g
• Overall Diameter: Φ76.28mm (3 inch)
• Height: 61.4mm (2.44 inch)
• Outlet Diameter: 19.05mm (0.75 inch)
• Neck Diameter: 45.6mm (1.8 inch)
• Polyethylene Ball Diameter: 31.75mm (1.25 inch)
• Function: Anti-clogging, anti-backflow, self-draining