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

FillGuard Deck Fill Protection Devices - 3 Pc Gasoline Set - GASOLINEKIT

Sea-Dog Scupper Valve - 520500-1

Seachoice Splashwell Drain Tube - 19121

Seachoice Drain Tube

Seachoice Scupper Valve - 18261

T-H Marine All Purpose Drain/Hatch Drain

Seachoice Deck Fill Replacement Cap

Seachoice Splashwell Drain Tube - 19131

Seachoice Deck Plate Key - 32651

White Water Wire Deck Plate Key - 1350KY

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

Seachoice Deck Plate Key and Tool - 32671

Whitecap Replacement Deck Fill Key - 6060C

Whitecap Replacement Nylon Deck Fill Cap

T-H Marine Flush Mount Scupper Valve Assembly

Seachoice Twist 'n' Lock Deck Plate

Seachoice Nylon Deck Fill with Cap

Seachoice Pry-Up Deck Plate

T-H Marine Push-In Overflow Drain Tube

Perko Surface Mount Scupper Valve Assembly - 0365DP

Seachoice Self Bailing Scupper

T-H Marine Large Rectangular Scuppers - LRS-2-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 Flow-Max Ball Scupper - FMS-1-0-DP

Forespar CF251S Marelon Mushroom Head Thru-Hull with Screen - 906013

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

Perko Flush Mount Cockpit Scupper - 0285DP

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Whitecap Nylon Deck Fill

Whitecap Deck Fill Cap Replacement with Chain - 6061C

Perko Deck Fill - 1313DP0CHR

Seachoice Gas Deck Fill with Cap & Strap Tether - 32011

Groco Adjustable Collapsible Spanner Wrench - SW-2531

Forespar Replacement Water Deck Fill - 907003

Forespar Replacement Waste Deck Fill - 907004

Perko Vented Gas Fill

Whitecap Angled Scupper with Barb - 6559

Attwood Pro Series Rod Holder - 5010-4

Dometic NozAll Deck Pump-Out Adapter

Seachoice Gas Deck Fill with Vent & Cap - 32061

Perko Fuel System Locking Cap - 1324DP0BLK

Plastimo Stainless Steel Winch/Deck Filler Key - 61804

Perko Locking Gas Fill - 1399DP0CHR

Perko Plastic Straight Neck Vented Deck Fill - 0543DPGBLK

Perko Plastic Angled Neck Vented Deck Fill

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

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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