







316 Stainless Steel Self-Bailing Boat Floor Drain - Anti-Odor Scupper (1.5")
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Professional Grade Marine Deck Drainage
Upgrade your vessel's plumbing with our 316 Stainless Steel Self-Bailing Boat Floor Drain. Engineered for extreme saltwater environments, this scupper features a forensic-quality mirror-polished flange that resists corrosion and maintains a pristine finish for years.
Intelligent Gravity-Valve Technology
Equipped with a precision 41mm floating ball mechanism, this drain acts as a one-way check valve. It automatically expels water via gravity while the internal ball seals the pipe when dry, effectively blocking foul bilge odors and insects from entering the deck area.
Advanced Filtration & High-Flow Architecture
- Precision Grate: Traps sand, leaves, and debris to prevent internal plumbing clogs without compromising water flow.
- Marine-Grade Durability: Forged from premium Type 316 Stainless Steel for superior tensile strength and salt-spray resistance.
- Easy Retrofit: Designed to fit standard boat drain openings with a 92mm flange and 40mm (1.5") hose connection.
Perfect for yachts, speedboats, and RVs, this drainage solution ensures vessel stability by preventing water accumulation on deck.
Frequently Asked Questions
- Will salt water cause the internal floating ball mechanism to seize over time?
- No. The system uses a high-density synthetic floating ball and 316 marine-grade stainless steel housing. Unlike plastic scuppers that degrade or metal-on-metal valves that corrode, our mirror-polished interior prevents mineral scaling and salt buildup, ensuring the gravity-driven seal remains fluid and functional.
- How do I maintain the filtration grate to prevent clogs from sand or debris?
- Maintenance is simplified by the top-access design. The precision-filtration grate is secured by standard marine-grade screws, allowing you to quickly clear trapped sand or leaves without removing the entire through-deck assembly. The grate is engineered to trap particles while maintaining a high-flow drainage area.
- Can this drain be installed below the waterline?
- This product is specifically engineered as a deck or cockpit scupper for self-bailing configurations located above the static waterline. While the floating ball effectively blocks splashes and odors, it is not designed as a primary watertight seal for submerged hull penetrations which require a dedicated seacock.
Engineering Specs
ESTABLISHED 2017
AirowMarine
Professional Marine Hardware for a Safer Voyage.












