Sea-Dog Stainless Steel Cast Hose Deck Fill Fits 1-1/2" Hose - Water

The Sea-Dog Stainless Steel Cast Hose Deck Fill for 1-1/2" hose is a marine-grade water fill system built for boats, RVs, and watercraft requiring secure, corrosion-resistant fluid access. Constructed from investment-cast 316 stainless steel, this deck fill delivers the durability needed in salt-air and freshwater environments where standard steel corrodes rapidly. The slotted cap design requires a matching key to open and close, preventing unauthorized or accidental access to your vessel's water system during operation or dockside.

The 1-1/2" hose fitting features a cap diameter of 1-7/8" with 11-1/2 NPSM straight thread pitch, ensuring a secure seal at the deck penetration. Investment-cast 316 stainless steel resists pitting and rust far longer than chrome-plated brass alternatives, critical for vessels spending significant time in saltwater or humid climates. The included attachment chain prevents cap loss overboard—a practical detail that pays for itself on the first docking. Installation uses NPSM straight threading, a standard marine coupling that seats reliably without special adapters.

This deck fill serves freshwater system applications on cruising sailboats, trawlers, expedition vessels, and RVs where reliable access and security matter. Boat owners and technicians choose Sea-Dog deck fills when original equipment fails or upgrading from plastic to metal components. The key-lock feature is especially valuable for vessels moored in high-traffic areas or for operators managing multiple crew members who should not access the water system independently. Replacement caps are available separately, making long-term ownership cost-effective.