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

Seaview Vault Series Transom Drain Plug - SV101V

Sea-Dog Universal Deck Plate Key - 335690-1

Seachoice Deck Plate Key and Tool - 32671

Whitecap Garboard Drain & Plug - S-5051C

Whitecap Stainless Steel Snap-Lever Bailer Plug - S-0292C

Forespar Garboard Drain Flange with Plug

Whitecap Deck Plate Key - 6060

Whitecap Replacement Deck Fill Key - 6060C

T-H Marine Flush Mount Scupper Valve Assembly

Vetus Wrench Key - VE87

Whitecap Transom Well Drain Tube - S-3818C

Sea-Dog Plugmate Garboard/Drain Plug Wrench - 520045-1

Groco Garboard Drain with Plug

Whitecap Universal Deck Plate Key - S-7041P

Seachoice Nylon Deck Fill with Cap

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

T-H Marine Push-In Overflow Drain Tube

Camco Water Pressure Regulator - 40055

Sea-Dog Thru Hull with Scupper Valve - 520510-1

Sea-Dog Garboard Drain and Plug - 520040-1

Perko Surface Mount Scupper Valve Assembly - 0365DP

T-H Marine Scupper Flapper Repair Kit - FSRK-3-DP

Whitecap Livewell Drain Thru Hull

T-H Marine Large Rectangular Scuppers - LRS-2-DP

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

Seachoice Garboard Drain Flange & Plug

Whitecap Garboard Drain Replacement Plug - 6352C

Davis Instruments Snap Tool Multi-Key - 382

Perko Polymer Gas Fill - 1613DP0BLK

Seachoice Gas Deck Fill with Cap & Beaded Chain Tether - 32041

Whitecap Chrome Plated Zinc Hose Deck Fill with Splash Guard - S-7021C

T-H Marine Flow-Max Ball Scupper - FMS-1-0-DP

Seaview Vault Center Drain Plug

Sea-Dog Chrome Plated Zinc Hose Deck Fill with Splash Guard - 351750-1

Seachoice Self Bailing Scupper

Sea-Dog Washdown Water Outlet

Scandvik Flush Shower Drain - 10352

Seaview Vault Series Pro Transom Drain Plug with Gasket and Garboard - SV101VP

Perko Flush Mount Cockpit Scupper - 0285DP

Sea-Dog Stainless Steel Hose Deck Fill Replacement Cap

Whitecap Nylon Deck Fill

Forespar MF 830 Deck Fill

Whitecap Nylon Cockpit Scupper

Scandvik Shower Drain/Scupper - 10338

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Groco Adjustable Collapsible Spanner Wrench - SW-2531

Perko Deck Fill - 1313DP0CHR

Sea-Dog Fresh Water Inlet

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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