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 Hose Deck Fill

Edson Universal Pumpout Nozzle with Splash Guard - 27220

Whitecap EPA Pull-Up Hose Deck Fill

Groco Adjustable Collapsible Spanner Wrench - SW-2531

Plastimo Stainless Steel Winch/Deck Filler Key - 61804

Dometic NozAll Deck Pump-Out Adapter

Whitecap Push Up Deck Fill

Perko Sealed Ratcheting Cap Fill - 0660DPG99A

Whitecap Deck Fill Cap Replacement with Chain - 6061C

Whitecap EPA Pressurized System Deck Fill

Davis Instruments Snap Tool Multi-Key - 382

Whitecap 30 deg. Angled EPA Pull-Up Hose Deck Fill

Whitecap Nylon Deck Fill

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

Centek Vernay Scupper Drain Fitting

Seachoice Self Bailing Scupper

Whitecap Replacement Nylon Deck Fill Cap

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

Whitecap Gas Hose Deck Fill with Splash Guard - 6001

Perko Flush Mount Drain - 0361005CHR

Forespar MF 830 Deck Fill

Whitecap Replacement Push Up Deck Fill Cap

T-H Marine Push-In Overflow Drain Tube

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

Whitecap Pipe Deck Fill

Whitecap Pull-Up Hose Deck Fill

Whitecap Replacement Deck Fill Key - 6060C

Sea-Dog Scupper Valve - 520500-1

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

Groco SCUS Series Hose Barb Deck Drain

Perko Chrome Plated Angled Neck Vented Deck Fill

Perko Waste Deck Plate - 1269DP0CHR

Perko Vented Gas Fill

White Water Wire Deck Plate Key - 1350KY

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

Perko Flush Mount Cockpit Scupper - 0285DP

Perko Plastic Angled Neck Vented Deck Fill

Perko Fuel & Water Fill

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

Whitecap Livewell Drain Thru Hull

Whitecap Stainless Steel Waste Fill Adapter - 6126ADPT

Perko Deck Fill - 1313DP0CHR

Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

T-H Marine Flush Mount Scupper Valve Assembly

T-H Marine All Purpose Drain/Hatch Drain

Seachoice Splashwell Drain Tube - 19121

Seachoice Splashwell Drain Tube - 19131

Seachoice Deck Plate Key and Tool - 32671

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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