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

Attwood Livewell/Bailer Drain Plug - 1/2" - 7533A7

Sea-Dog Brass Drain Tube

Sea-Dog Washdown Water Outlet

Sea-Dog Garboard Drain T-Handle Plug - 520047-1

Sea-Dog Drain Tube - 520320-1

Sea-Dog Stainless Steel Hose Deck Fill

Sea-Dog Stainless Steel Hose Deck Fill Replacement Cap

Forespar MF 830 Deck Fill

Whitecap Brass Drain Tube - S-5064C

Whitecap Transom Well Drain Tube - S-3818C

Whitecap Livewell Drain Thru Hull

Whitecap EPA 1/4-Turn Pull-Up Cap with Chain

Whitecap Nylon Cockpit Scupper

Whitecap Nylon 90 deg. Drain Tube Kit - S-3850

Whitecap Universal EPA Pull-up Cap with Chain - 6063C

Whitecap Replacement Pull-Up Threaded Cap with Chain - 6063

Whitecap Universal Push-Up Deck Fill Replacement Cap

Whitecap Stainless Steel Scupper with Hose Barb

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Stainless Trim Nylon Scupper with Hose Barb - 6561

Perko Replacement Vented Cap

Perko Unmarked Fill Cap

Perko Replacement Vented Flip Top Cap - 0795DP0BLK

Perko Sealed Ratcheting Cap Fill - 0660DPG99A

Whitecap Tapered Hose Deck Fill

Whitecap 30 deg. Angled EPA Pull-Up Hose Deck Fill

Whitecap Pipe Deck Fill

Seachoice Stainless Steel Deck Fill with Cap

Seachoice Drain Plug

Seachoice Garboard Drain Plug - 50-18661

Seachoice Deck Plate Key - 32651

Seachoice Deck Plate Key and Tool - 32671

Seachoice Drain Tube

Seachoice Splashwell Drain Tube - 19121

Seachoice Splashwell Drain Tube - 19131

Seachoice Scupper Valve - 18261

Seachoice Self Bailing Scupper

Perko Vented Gas Fill

Perko Fuel & Water Fill

Perko Fuel System Locking Cap - 1324DP0BLK

Perko Deck Fill Plate

Perko Chrome Cockpit Scupper

Perko Adjustable Deck Plate Key - 0826DP0CHR

Perko Chrome Plated Angled Neck Vented Deck Fill

Perko Flush Mount Cockpit Scupper - 0285DP

Perko Waste Deck Plate - 0524DP0CHR

Attwood Deck Fill with Gasoline Imprint - 66406-5

Scandvik Flush Shower Drain - 10352

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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