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

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

Forespar Garboard Drain Flange with Plug

Forespar Garboard Drain Tube with Plug

Perko T-Handle Garboard Drain Plug - 0266DP0PLB

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

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

Centek Vernay Scupper Drain Fitting

Whitecap EPA Pressurized System Deck Fill

Perko Unmarked Fill

Perko Unmarked Fill Cap

Seachoice Drain Tube

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

Sea-Dog Nylon Drain Plug - 520010-1

Sea-Dog Replacement Drain Plug - 520041-1

Sea-Dog Snap Handle Drain Plug - 520070-1

Whitecap Replacement Deck Fill Key - 6060C

Davis Instruments Snap Tool Multi-Key - 382

Jabsco Water Pressure Regulator - 44411-0045

Perko Flush Mount Cockpit Scupper - 0285DP

Perko Garboard Drain Plug - 0714DP1PLB

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

Seachoice Stainless Steel Deck Fill with Cap

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

T-H Marine Push-In Overflow Drain Tube

Beckson Screw Type Drain Plug - 1"

Scandvik Flush Shower Drain - 10352

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Transom Well Drain Tube - S-3818C

Seachoice Splashwell Drain Tube - 19131

Forespar MF 830 Deck Fill

Sea-Dog Garboard Drain T-Handle Plug - 520047-1

Sea-Dog Drain Tube - 520320-1

Sea-Dog Fresh Water Inlet

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

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

Sea-Dog Scupper Valve - 520500-1

White Water Wire Deck Plate Key - 1350KY

Whitecap Tee Handle Drain Plug with Stainless Steel Cable & Nut - S-0242C

Whitecap Brass Snap-Lever Type Bailer Plug

Whitecap Brass Screw Type Bailer Plug

T-H Marine Flush Mount Scupper Valve Assembly

T-H Marine Drain Plug

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

T-H Marine PVC Push-In Drain Plug

Attwood Drain Plug Kit - 17211-3

Camco Water Pressure Regulator - 40055

Seachoice Deck Plate Key - 32651

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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