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 EPA Pull-Up Hose Deck Fill

Whitecap Hose Deck Fill

Plastimo Stainless Steel Winch/Deck Filler Key - 61804

Dometic NozAll Deck Pump-Out Adapter

Groco Adjustable Collapsible Spanner Wrench - SW-2531

Perko T-Handle Garboard Thru-Hull Drain Plug - 0363DP0PLB

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

Jabsco Hose Coil Quick Release Connector - 3/4" Adapter - 31911-0000

Whitecap Push Up Deck Fill

Whitecap Pipe Deck Fill

Perko Water Inlet - 0499DP0CHR

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

Jabsco Water Pressure Regulator - 44411-1045

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

Whitecap Deck Fill Cap Replacement with Chain - 6061C

Perko T-Handle Garboard Drain Plug - 0266DP0PLB

Whitecap Replacement Push Up Deck Fill Cap

Centek Vernay Scupper Drain Fitting

Perko Flush Mount Cockpit Scupper - 0285DP

Groco Garboard Drain with Plug

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

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

Davis Instruments Snap Tool Multi-Key - 382

Perko Waste Deck Plate - 0524DP0CHR

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

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

Whitecap Nylon Deck Fill

Jabsco Water Pressure Regulator - 44411-0045

Perko Deck Fill Plate

Perko Vented Gas Fill

Seachoice Drain Plug

Perko Sealed Ratcheting Cap Fill - 0660DPG99A

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

Sea-Dog Scupper Valve - 520500-1

Forespar Garboard Drain Tube with Plug

Whitecap Gas Hose Deck Fill with Splash Guard - 6001

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

White Water Wire Deck Plate Key - 1350KY

Scandvik Flush Shower Drain - 10352

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

Forespar Garboard Drain Flange with Plug

Jabsco Water Pressure Regulator - 44412-2045

Whitecap Stainless Steel Waste Fill Adapter - 6126ADPT

Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

Jabsco Water Pressure Regulator - 44412-1045

Seachoice Self Bailing Scupper

Perko Waste Deck Plate - 1269DP0CHR

Perko Fuel & Water Fill

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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