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

Perko Unmarked Fill Cap

T-H Marine Push-In Overflow Drain Tube

Perko T-Handle Garboard Drain Plug - 0266DP0PLB

Sea-Dog Scupper Valve - 520500-1

Beckson Screw Type Drain Plug - 1"

Jabsco Water Pressure Regulator - 44411-1045

Forespar Garboard Drain Tube with Plug

Seachoice Self Bailing Scupper

Perko Chrome Plated Angled Neck Vented Deck Fill

Perko Chrome Cockpit Scupper

Perko Fuel & Water Fill

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

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

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

Perko Flush Mount Cockpit Scupper - 0285DP

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Universal Push-Up Deck Fill Replacement Cap

Whitecap Replacement Pull-Up Threaded Cap with Chain - 6063

Whitecap Livewell Drain Thru Hull

Whitecap Transom Well Drain Tube - S-3818C

T-H Marine PVC Push-In Drain Plug

T-H Marine Overflow Drain Tube - ODT-2T-DP

Scandvik Flush Shower Drain - 10352

Camco Water Pressure Regulator - 40055

Perko Replacement Vented Flip Top Cap - 0795DP0BLK

Whitecap Stainless Trim Nylon Scupper with Hose Barb - 6561

T-H Marine Flush Mount Scupper Valve Assembly

T-H Marine Cockpit Scupper Drain - CSD-92-DP

Attwood Drain Plug Kit - 17211-3

Whitecap Brass Screw Type Bailer Plug

Attwood Deck Fill with Gasoline Imprint - 66406-5

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

Seachoice Splashwell Drain Tube - 19131

Seachoice Drain Tube

Seachoice Deck Plate Key - 32651

Seachoice Deck Plate Key and Tool - 32671

Perko Surface Mount Scupper Valve Assembly - 0365DP

Whitecap Replacement Deck FIll Cap and Chain - 6061

Perko Flush Mount Drain

Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

T-H Marine Drain Plug

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

White Water Wire Deck Plate Key - 1350KY

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

Sea-Dog Snap Handle Drain Plug - 520075-1

Groco SCUS Series Hose Barb Deck Drain

Whitecap Aluminum Screw Type Bailer Plug

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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