Deck fillers
Equip your boat with reliable deck fillers designed for fuel, water, and waste tank connections. These essential fittings allow you to fill tanks safely and efficiently, ensuring a watertight seal that prevents leaks and contamination.
Available in stainless steel, chrome-plated brass, and durable plastic, deck fillers are built to withstand harsh marine conditions. They come in various cap types and hose sizes, often engraved or colour-coded to indicate their specific use (diesel, water, or waste).
Whether you’re refilling drinking water, fuel, or waste tanks, our marine deck fillers guarantee secure installation, easy access, and long-lasting corrosion resistance.
What are deck fillers used for?
A deck filler is a deck-mounted fitting used to fill onboard tanks from outside the boat. It provides a safe, accessible entry point for filling freshwater tanks or emptying and servicing wastewater tanks.
Deck fillers are primarily used for:
- Filling freshwater tanks
- Accessing wastewater tanks
- Tank fill points on deck
They help prevent spills and ensure the correct tank is filled or emptied.
What types of deck fillers are available?
Common deck filler types include:
- Freshwater
- Wastewater
- Fuel / diesel
Clear labeling is important to avoid cross-contamination or incorrect filling.
What materials are deck fillers made from?
Deck fillers are typically made from marine-grade materials such as:
- Stainless steel: durable, corrosion-resistant and clean in appearance
- Chrome-plated brass: robust with a classic marine look
- Plastic: lightweight and corrosion-free
Material choice depends on deck exposure, aesthetics and installation requirements.


