Deck Fills & Drains

About Deck Fills & Drains

Cockpit Drains & Scuppers

Defender Marine offers a variety of cockpit drains, self-bailing scupper drains, and thru hulls with scupper valves. Thru hull valves and deck scuppers can be installed above or below the waterline and are offered in a polymer composite called Marelon, injection-molded nylon, or molded fiberglass.

Self bailers take the guess work out of cockpit drains.

When a boat is underway the pressure of water running out through the scupper opens a one-directional valve to release the water from the hull. When the scupper is closed, during rest, no water can leak into the boat. Self-bailers assist bilge pumps in keeping the hull free of excess water and are especially helpful on boats that are "wet" or take on water and spray while running.

What are deck drains made of?

Defender Marine offers scupper drains fabricated out of a variety of materials. Marelon is a polymer composite that never cracks or loses its shape, while injection-molded nylon is strong and UV resistant. Molded fiberglass cockpit drains, as well as polycarbonate boat scuppers, offer a few more options while shopping for scupper drains.

I've got a new scupper, now what?

Installation above the waterline is not complicated and can be a DIY project - just remember to measure twice! Also, examine that boat scupper drain that you have purchased and be certain that it will work for your application. Hose barb or threaded connections are questions that need to be answered before the project starts, as cockpit drains and scuppers must be plumbed to exit the hull. Be certain the project is completely prepped, and all gasket materials are ready to go before you start!

Deck Fills & Drains

Perko Fuel & Water Fill

Whitecap Pull-Up Hose Deck Fill

Nuova Rade Adjustable Flip-Up Drain/Bailer Plug - 45309

Perko Locking Deck Fill - Gas - 0599DPGCHR

Perko Vented Gas Fill

T-H Marine Cockpit Scupper Drain - CSD-92-DP

Beckson Screw Type Drain Plug - 1"

Jabsco Water Pressure Regulator - 44412-1045

Perko Adjustable Deck Plate Key - 0826DP0CHR

Perko Chrome Plated Angled Neck Vented Deck Fill

Perko Surface Mount Scupper Valve Assembly - 0365DP

Perko Waste Deck Plate - 1269DP0CHR

Seachoice Garboard Drain Plug - 50-18661

Seachoice Stainless Steel Deck Fill with Cap

Whitecap Washdown Inlet

White Water Wire Deck Plate Key - 1350KY

Whitecap Replacement Deck Fill Key - 6060C

Sea-Dog Nylon Drain Plug - 520010-1

Sea-Dog Snap Handle Drain Plug - 520070-1

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Seachoice Gas Deck Fill with Vent & Cap - 32061

Perko Replacement Vented Cap

Whitecap Livewell Drain Thru Hull

T-H Marine Flush Mount Scupper Valve Assembly

Jabsco Flush Mount Water Pressure Regulator - 44411-2045

Whitecap Tee Handle Boat Drain Plug with Cable - S-0211C

Groco SCUS Series Hose Barb Deck Drain

Attwood Deck Fill with Gasoline Imprint - 66406-5

Seachoice Splashwell Drain Tube - 19131

Seachoice Drain Tube

Perko Flush Mount Drain - 0361005CHR

Whitecap Stainless Steel/Nylon Scupper with Hose Barb - 6561

Whitecap Transom Well Drain Tube - S-3818C

Barton Drain Plug

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

T-H Marine Push-In Overflow Drain Tube

Whitecap Angled Scupper with Barb - 6559

Whitecap Brass Screw Type Bailer Plug

Perko Deck Fill - 1313DP0CHR

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

Perko Locking Gas Fill - 1399DP0CHR

Scepter Snap Drain Plug - 1" - 10688 / 10666

Sea-Dog Drain Tube - 520210-1

Sea-Dog Garboard Drain Tube with Plug - 520050-1

Sea-Dog Snap Handle Drain Plug - 520075-1

Attwood Drain Plug Kit - 17211-3

Perko Chrome Cockpit Scupper

About Deck Fills & Drains

Cockpit Drains & Scuppers

Self bailers take the guess work out of cockpit drains.

What are deck drains made of?

I've got a new scupper, now what?

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