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Boat Deck Hardware, Taps and Washdown Fittings

Galley taps, shower controls, washdown valves, hull fittings and connectors for boat plumbing and deck use. 85 products from $8.99 to $557.99. Scandvik, Taylor, Groco Marine Products and more.

85 products from $8.99

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Freshwater taps and valves: spout, control and finish

Galley and cockpit taps come as mixers, single-lever taps, shower controls and washdown valves. Check the spout style, swivel or fixed, and the reach, and note whether the control is hot and cold, cold only or a mixer, since a cold-only valve cannot be turned into a mixer. Chrome-plated brass looks bright and suits freshwater use above deck, while stainless bodies with ceramic-disc cartridges, as used in washdown valves, hold up to salt spray better. Confirm the thread and the hose barb size before choosing.

Hull fittings, connectors and how they seal

A hull fitting passes through the hull, so size it by the hose it serves and cut the hole to the maker's stated size. The nut and a backing plate spread the load, and the fitting should be bedded in marine sealant so it stays watertight; a seacock on top lets you close the line. Connectors and elbows are specified by thread and hose size, so measure the part you are replacing. Bulkhead connectors need access to both sides, and their gaskets should be replaced whenever you open them.

Questions about Boat Deck Hardware, Taps and Washdown Fittings

Can I use household taps on a boat?
They can work for freshwater above deck, but boat taps are built for vibration and salt air, and many have swivel spouts that suit small sinks. Household finishes may corrode, so choose marine-grade chrome, brass or stainless fittings.
Why does a thru-hull need a backing plate or seacock?
The fitting carries the weight of the valve and hose, and a failure below the waterline can sink the boat. A seacock closes the hole when needed, and a backing plate spreads the load on the hull. Both are fitted with marine sealant.
How do I measure a fitting to replace it?
Measure the thread and the hose barb or pipe size, note any bulkhead thickness, and compare the existing part number or photograph the markings. Threads may be NPT, BSP or a hose thread, and not all combinations seal against each other.