![Sea-Dog Thru-Hull w/Scupper Valve - Injection Molded Acetel [520510-1]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/sea-dog-thru-hull-w-scupper-valve-injection-molded-acetel-520510-1.webp)
Thru-Hull with Scupper Valve – Injection Molded Acetel
This Thru-Hull Scupper Valve mounts through the transom and provides a water exit for boats with self-bailing cockpits. Ideal for above the water line drainage. Valve features a soft black flapper that seals to prevent backwash. For use with 1-1/2″ hose. Compatible with most self-bailing applications. Constructed of injection-molded acetal. Installs with four 6 FH fasteners (included).
Specifications:
- Type: Parts
![GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/groco-3-bronze-thru-hull-fitting-w-nut-th-3000-w.webp)
![GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/groco-2-1-2-bronze-thru-hull-fitting-w-nut-th-2500-w.webp)
