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

Seachoice Self Bailing Scupper

Whitecap Replacement Push Up Deck Fill Cap

Perko Chrome Plated Angled Neck Vented Deck Fill

Forespar MF 830 Deck Fill

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

Forespar Garboard Drain Flange with Plug

Beckson Screw Type Drain Plug - 1"

Whitecap Gas Hose Deck Fill with Splash Guard - 6001

Perko Straight Neck Vented Fill - 0591DPGCHR

Whitecap Nylon 90 deg. Drain Tube Kit - S-3850

Seachoice Drain Tube

Seachoice Gas Deck Fill with Locking Cap - 32051

Seachoice Gas Deck Fill with Vent & Cap - 32061

Perko Adjustable Deck Plate Key - 0826DP0CHR

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

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Sea-Dog Nylon Drain Plug - 520010-1

Jabsco Water Pressure Regulator - 44411-1045

Camco Water Pressure Regulator - 40055

Perko Unmarked Fill Cap

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Stainless Steel Scupper with Hose Barb

Seachoice Splashwell Drain Tube - 19131

Perko Surface Mount Scupper Valve Assembly - 0365DP

Perko Fuel & Water Fill

Perko Vented Gas Fill

Whitecap Transom Well Drain Tube - S-3818C

T-H Marine Flush Mount Scupper Valve Assembly

T-H Marine Push-In Overflow Drain Tube

Whitecap Replacement Deck Fill Key - 6060C

White Water Wire Deck Plate Key - 1350KY

Perko Deck Fill - 1313DP0CHR

Sea-Dog Drain Tube - 520210-1

Whitecap Brass Screw Type Bailer Plug

Attwood Deck Fill with Gasoline Imprint - 66406-5

Whitecap Self-Captive Garboard Drain Plug pkg

Perko Flush Mount Drain - 0361005CHR

Whitecap Washdown Inlet

Seachoice Scupper Valve - 18261

Seachoice Garboard Drain Flange & Plug

Seachoice Garboard Drain Plug - 50-18661

Seachoice Stainless Steel Deck Fill with Cap

Perko Chrome Plated Straight Neck Vented Deck Fill

Whitecap Threaded Scupper - S-3814

Whitecap Livewell Drain Thru Hull

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

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

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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