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 T-Handle Garboard Drain Plug - 0266DP0PLB

Sea-Dog Nylon Drain Plug - 520010-1

Beckson Screw Type Drain Plug - 1"

Scandvik Flush Shower Drain - 10352

Forespar Garboard Drain Tube with Plug

Seachoice Self Bailing Scupper

Perko Flush Mount Cockpit Scupper - 0285DP

Whitecap Tapered Hose Deck Fill

T-H Marine Push-In Overflow Drain Tube

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

Jabsco Water Pressure Regulator - 44412-2045

Perko Chrome Cockpit Scupper

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Livewell Drain Thru Hull

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

Camco Water Pressure Regulator - 40055

Seachoice Splashwell Drain Tube - 19131

Seachoice Drain Tube

Whitecap EPA 1/4-Turn Pull-Up Cap with Chain

Perko Chrome Plated Angled Neck Vented Deck Fill

Perko Surface Mount Scupper Valve Assembly - 0365DP

Perko Fuel & Water Fill

Perko Replacement Vented Flip Top Cap - 0795DP0BLK

Perko Unmarked Fill

Whitecap Transom Well Drain Tube - S-3818C

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

T-H Marine PVC Push-In Drain Plug

Sea-Dog Snap Handle Drain Plug - 520075-1

Whitecap Brass Screw Type Bailer Plug

Attwood Deck Fill with Gasoline Imprint - 66406-5

Seachoice Garboard Drain Plug - 50-18661

Seachoice Deck Plate Key - 32651

Seachoice Deck Plate Key and Tool - 32671

Perko Flush Mount Drain

Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

T-H Marine Flush Mount Scupper Valve Assembly

T-H Marine Drain Plug

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

White Water Wire Deck Plate Key - 1350KY

Barton Drain Plug

Sea-Dog Drain Tube - 520210-1

Groco SCUS Series Hose Barb Deck Drain

Whitecap Aluminum Screw Type Bailer Plug

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Attwood Drain Plug Kit - 17211-3

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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