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 Stainless Trim Nylon Scupper with Hose Barb - 6561

Whitecap Replacement Deck FIll Cap and Chain - 6061

Whitecap Universal Push-Up Deck Fill Replacement Cap

Perko Plastic Straight Neck Vented Deck Fill - 0543DPGBLK

Perko Chrome Cockpit Scupper

Perko Plastic Angled Neck Vented Deck Fill

Perko Fuel System Locking Cap - 1324DP0BLK

Whitecap Threaded Scupper - S-3814

Whitecap Brass Drain Tube - S-5064C

Whitecap Chrome Plated Zinc Hose Deck Fill with Splash Guard - S-7021C

Whitecap Universal Deck Plate Key - S-7041P

Whitecap Nylon Deck Fill Replacement Cap

Sea-Dog Universal Deck Plate Key - 335690-1

Sea-Dog Deck Fill Key - 351399-1

Sea-Dog Chrome Plated Zinc Hose Deck Fill Replacement Cap - 351755-1

Sea-Dog Drain Tube - 520320-1

Sea-Dog Brass Drain Tube

Perko Locking Deck Fill - Diesel - 0599DPDCHR

Seaview Vault Series Transom Drain Plug - SV101V

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

Vetus Wrench Key - VE87

Seaview inteliPlug ProX Drain Plug - SVIPPROX

Seaview Vault Center Drain Plug

Whitecap Aluminum Turn Type Bailer Plug - S-0288

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

Whitecap Brass Snap-Lever Type Bailer Plug

Scandvik Shower Drain/Scupper - 10338

Attwood T-Handle Stainless Steel Drain Plug - 7518PD2

Seachoice Gas Deck Fill with Cap & Strap Tether - 32011

Seachoice Drain Plug - 18781

Whitecap Drain Tube Grate

Whitecap Garboard Drain Replacement Plug - 6352C

Perko Straight Neck Vented Fill - 0583DP0STS

Perko Angled Neck Vented Fill

Whitecap Replacement Deck Fill Cap and Chain - 6167

Whitecap Replacement Deck FIll Cap and Chain - 6002C

Whitecap Drain Tube Kit - 90 deg.

Whitecap Stainless Steel Snap-Lever Bailer Plug - S-0292C

Whitecap S-7021 Replacement Cap and Chain - S-7022C

Forespar MF 790 Drain Plug - 907001

Forespar MF 830 Deck Fill Cap

Sea-Dog Chrome Plated Zinc Hose Deck Fill with Splash Guard - 351750-1

Sea-Dog Replacement Plug - 520021-1

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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