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

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

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

Sea-Dog Nylon Drain Plug - 520010-1

Davis Instruments Snap Tool Multi-Key - 382

Perko Fuel & Water Fill

Whitecap Tapered Hose Deck Fill

Perko Unmarked Fill Cap

T-H Marine Push-In Overflow Drain Tube

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

Beckson Screw Type Drain Plug - 1"

Perko Fuel System Locking Cap - 1324DP0BLK

Seachoice Stainless Steel Deck Fill with Cap

Whitecap Replacement Deck Fill Key - 6060C

Jabsco Flush Mount Water Pressure Regulator - 44411-2045

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

Camco Water Pressure Regulator - 40055

Perko Flush Mount Cockpit Scupper - 0285DP

Perko Waste Deck Plate - 0524DP0CHR

Seachoice Garboard Drain Plug - 50-18661

Scandvik Flush Shower Drain - 10352

Perko Chrome Cockpit Scupper

Attwood Deck Fill with Gasoline Imprint - 66406-5

Whitecap Universal Push-Up Deck Fill Replacement Cap

Whitecap Stainless Steel Waste Fill Adapter - 6126ADPT

Whitecap Push Up Deck Fill

T-H Marine Flush Mount Scupper Valve Assembly

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Whitecap Brass Screw Type Bailer Plug

Seachoice Splashwell Drain Tube - 19121

Seachoice Splashwell Drain Tube - 19131

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Livewell Drain Thru Hull

Sea-Dog Drain Tube - 520320-1

Sea-Dog Brass Drain Tube

White Water Wire Deck Plate Key - 1350KY

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

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

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

Whitecap Nylon Garboard Drain Plug - 3051BC

Seachoice Scupper Valve - 18261

Seachoice Deck Plate Key and Tool - 32671

Forespar MF 830 Deck Fill

Whitecap Brass Drain Tube - S-5064C

Seaview Vault Series Transom Drain Plug - SV101V

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

Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

Perko Locking Deck Fill - Diesel - 0599DPDCHR

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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