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 Drain Tube

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

Whitecap Replacement Deck Fill Key - 6060C

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

Sea-Dog Nylon Drain Plug - 520010-1

Sea-Dog Scupper Valve - 520500-1

Jabsco Water Pressure Regulator - 44412-2045

Jabsco Water Pressure Regulator - 44411-0045

Jabsco Water Pressure Regulator - 44412-1045

Scandvik Flush Shower Drain - 10352

Perko Fuel & Water Fill

Whitecap Replacement Deck FIll Cap and Chain - 6074C

Whitecap Replacement Push Up Deck Fill Cap

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

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Attwood Deck Fill with Gasoline Imprint - 66406-5

Perko Surface Mount Scupper Valve Assembly - 0365DP

Whitecap Pull-Up Hose Deck Fill

Whitecap Tapered Hose Deck Fill

Whitecap Livewell Drain Thru Hull

Sea-Dog Stainless Steel Hose Deck Fill

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

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

Sea-Dog Snap Handle Drain Plug - 520075-1

Seachoice Stainless Steel Deck Fill with Cap

Seachoice Splashwell Drain Tube - 19121

Seachoice Deck Plate Key - 32651

Seachoice Deck Plate Key and Tool - 32671

Seachoice Garboard Drain Plug - 50-18661

Seachoice Gas Deck Fill with Vent & Cap - 32061

Whitecap Nylon Cockpit Scupper

Perko Flush Mount Cockpit Scupper - 0285DP

Perko Plastic Straight Neck Vented Deck Fill - 0543DPGBLK

Perko Chrome Cockpit Scupper

Perko Fuel System Locking Cap - 1324DP0BLK

Whitecap EPA Pressurized System Deck Fill

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

Whitecap Washdown Inlet

Forespar MF 830 Deck Fill

Whitecap Transom Well Drain Tube - S-3818C

Sea-Dog Stainless Steel Hose Deck Fill Replacement Cap

T-H Marine Flush Mount Scupper Valve Assembly

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Floor Drain and Vent

T-H Marine PVC Push-In Drain Plug

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

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

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

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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