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 Nylon Garboard Drain Plug - 3051BC

Whitecap Angled Scupper with Barb - 6559

Whitecap Aluminum Turn Type Bailer Plug - S-0288

Seaview Vault Center Drain Plug

Seaview Vault Stainless Steel Drain Plug

Seaview inteliPlug ProX Drain Plug - SVIPPROX

Groco SCUS Series Hose Barb Deck Drain

Groco Garboard Drain with Plug

Beckson Screw Type Drain Plug - 1"

Jabsco Flush Mount Water Pressure Regulator - 44411-2045

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

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

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

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

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

T-H Marine Push-In Overflow Drain Tube

T-H Marine PVC Push-In Drain Plug

T-H Marine Floor Drain and Vent

T-H Marine Drain Plug

T-H Marine All Purpose Drain/Hatch Drain

T-H Marine Flush Mount Scupper Valve Assembly

Seaview Vault Series Pro Transom Drain Plug with Gasket and Garboard - SV101VP

Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

Seaview InteliPlug ProXT Captive Drain Plug & Garboard Assembly Kit - SVIPPROXT

Seaview Vault Series Transom Drain Plug - SV101V

Whitecap Replacement Push Up Deck Fill Cap

Whitecap Stainless Steel Waste Fill Adapter - 6126ADPT

Whitecap Nylon Deck Fill

Whitecap EPA Pull-Up Hose Deck Fill

Whitecap Push Up Deck Fill

Whitecap Replacement Deck Fill Key - 6060C

Whitecap Replacement Nylon Deck Fill Cap

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

White Water Wire Deck Plate Key - 1350KY

Whitecap Hose Deck Fill

Whitecap Deck Fill Cap Replacement with Chain - 6061C

Vetus Wrench Key - VE87

SHURflo Wall Mount Pressure Reducing Water Connection - 183-029-18

SHURflo Wall Mount Pressure Reducing Water Connection - 183-029-14

Sea-Dog Nylon Drain Plug - 520010-1

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

Sea-Dog Replacement Drain Plug - 520041-1

Sea-Dog Scupper Valve - 520500-1

Sea-Dog Snap Handle Drain Plug - 520070-1

Sea-Dog Snap Handle Drain Plug - 520075-1

Sea-Dog Thru Hull with Scupper Valve - 520510-1

Sea-Dog Drain Tube - 520210-1

Sea-Dog Garboard Drain and Plug - 520040-1

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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