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 Pro Transom Drain Plug with Gasket and Garboard - SV101VP

Scandvik Flush Shower Drain - 10352

Whitecap Livewell Drain Thru Hull

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

Seachoice Bailer Safety Kit - 45431

Seaview Vault Center Drain Plug

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

Perko Polymer Gas Fill - 1613DP0BLK

Davis Instruments Snap Tool Multi-Key - 382

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

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

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

Perko Surface Mount Scupper Valve Assembly - 0365DP

Camco Water Pressure Regulator - 40055

Seachoice Garboard Drain Flange & Plug

Seachoice Self Bailing Scupper

Sea-Dog Garboard Drain and Plug - 520040-1

Whitecap Garboard Drain Replacement Plug - 6352C

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

T-H Marine Push-In Overflow Drain Tube

Whitecap Transom Well Drain Tube - S-3818C

Vetus Wrench Key - VE87

Whitecap Universal Deck Plate Key - S-7041P

Whitecap Garboard Drain & Plug - S-5051C

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

Groco Garboard Drain with Plug

Whitecap Replacement Nylon Deck Fill Cap

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

T-H Marine Flush Mount Scupper Valve Assembly

Whitecap Replacement Deck Fill Key - 6060C

Whitecap Deck Plate Key - 6060

Forespar Garboard Drain Flange with Plug

Seachoice Nylon Deck Fill with Cap

Whitecap Stainless Steel Screw Type Bailer Plug - S-0291C

Seaview Vault Series Transom Drain Plug - SV101V

Whitecap Nylon Deck Fill Replacement Cap

T-H Marine PVC Push-In Drain Plug

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

T-H Marine Drain Plug

Whitecap S-7021 Replacement Cap and Chain - S-7022C

Whitecap Brass Drain Tube - S-5064C

Whitecap Replacement O-Ring for Deck Fill Cap - 6061OR

Seachoice Deck Plate Key and Tool - 32671

Whitecap Aluminum Screw Type Bailer Plug

Whitecap Aluminum Snap-Lever Type Bailer Plug

Whitecap Brass Screw Type Bailer Plug

Whitecap Brass Snap-Lever Type Bailer Plug

Whitecap Aluminum Turn Type Bailer Plug - S-0288

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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